Speech Therapy CPT Codes 2026: Full List, Rates, Modifiers, and the 2027 92507 Change

Speech therapy CPT codes fall into four groups. Treatment: 92507, 92508, 92526, and 92609, all untimed. Evaluation: 92521, 92522, 92523, and 92524. Swallowing: 92610 for the clinical exam, 92611 for the modified barium swallow, 92612 for FEES. Specialty: the AAC pair 92607 and 92608, and the cognitive pair 97129 and 97130. Medicare Part B claims carry modifier GN. Once combined PT and SLP spend passes $2,480 in 2026, add modifier KX. CPT 92507 stays billable through December 31, 2026. The AMA replaces it with 10 timed codes on January 1, 2027.

What Are Speech Therapy CPT Codes?

The Four Categories Every SLP Code Falls Into

Speech therapy CPT codes start with treatment. CPT code 92507 covers individual speech, language, voice, and communication treatment. 92508 covers group treatment. 92526 handles swallowing and oral function for feeding. Each one bills once per session.

Evaluation codes split by disorder area. 92521 covers fluency and 92522 covers speech sound production. 92523 covers both speech and language, and 92524 covers voice and resonance. These four replaced CPT 92506 in 2014.

Instrumental swallowing studies make up the third group, led by 92610, 92611, and 92612. Specialty codes finish the set: AAC evaluation and device codes, plus the cognitive-communication codes 97129 and 97130.

That structure matters more than the individual numbers. Payers scrub speech therapy billing codes by category. Most denials trace back to a code borrowed from the wrong group, or a note that never proves skilled intervention.

Speech Therapy CPT Codes At a Glance

Four rules govern almost every SLP claim you file in 2026. Each section below breaks one down with the codes, the threshold, and the denial that follows.

Speech Therapy CPT Codes At a Glance

The Complete Speech Therapy CPT Code List for 2026

Five tables below cover the full 2026 set of SLP CPT codes. Each one stands alone, so you can lift the swallowing table into a scrub rule on its own.

Treatment codes

The 92507 CPT code is the most-billed SLP code in the country. Its untimed structure has one year left, and 92508 gets revised alongside it.

Speech Therapy CPT Codes for Treatment

Evaluation codes

The AMA deleted CPT 92506 effective January 1, 2014. Four disorder-specific codes replaced it, including the 92523 CPT code for combined speech and language evaluation. Some competing billing guides still name the wrong retired code, so check whatever cheat sheet your team is working from.

Speech Therapy Evaluation CPT Codes

CMS lists the ICD-10 codes that support each of these procedures in its CMS coverage article A54111. That article is the reference your medical necessity denials get measured against.

Swallowing and instrumental assessment codes

92610 evaluates and the 92526 CPT code treats. Bill one when you performed the other and you get a clean-looking claim that pays wrong. It ranks among the most common dysphagia coding errors.

Swallowing and Dysphagia CPT Codes

AAC and speech-generating device codes

92607 covers the first hour of the speech-generating device evaluation. 92608 covers each additional 30 minutes. File 92608 without 92607 on the claim and it denies.

AAC and Speech-Generating Device CPT Codes

Cognitive, aphasia, and caregiver training codes

Two caregiver training families run in parallel, and practices mix them up. The 97550 CPT family targets functional performance. The G0541 HCPCS family is Medicare-specific and targets complication prevention. That CPT and HCPCS difference matters before you build charge rules.

Cognitive, Aphasia, and Caregiver Training Codes

Commercial adoption of the G-code family varies. Medicare recognizes G0541 through G0543. Plenty of commercial plans still expect 97550 through 97552 for the same work, so verify before you switch a template.

That’s the full 2026 list of speech therapy CPT codes. CPT 2027 publishes in September 2026 with the replacement numbers for 92507. The AMA hasn’t assigned those five digits yet.

Timed vs Untimed Speech Therapy Codes, and Where the 8-Minute Rule Applies

Most SLP CPT codes are untimed, and you bill them inside a payment system built for timed ones. That gap separates SLP billing from PT and OT. The AMA closes it on January 1, 2027.

Untimed codes bill once per session

The untimed SLP CPT codes are 92507, 92508, 92521 through 92524, 92526, 92609, and 92610. They bill once per session regardless of length. A 30-minute session and a 60-minute session both produce one unit.

Session length still matters. It supports medical necessity and proves the service was skilled. It doesn’t drive the unit count.

CMS spells this out in CMS billing article A52866. Report 92507 and 92508 as a single encounter, one unit of service, whatever the duration.

The timed codes and how units work

92607 covers the first hour of the AAC evaluation, and 92608 covers each additional 30 minutes. 97129 covers the first 15 minutes of cognitive intervention, and 97130 covers each additional 15.

96105 and 96125 bill per hour, and the hour includes scoring and report preparation. Most SLPs underbill these two by counting only the face-to-face testing minutes.

The 96125 math trips up almost everyone. Under the standard midpoint convention, one unit needs at least 31 minutes of administration plus interpretation. Two units need at least 91.

Caregiver training codes work differently again. Medicare requires the full interval before the unit is billable, so 30 minutes means 30 minutes for 97550 and G0541.

For the 15-minute codes, the standard brackets apply. That 8-minute rule for therapy governs every timed code in your SLP set.

The 8-Minute Rule Unit Brackets for Timed Therapy Codes

The mistake that costs the most money

This one underbills instead of denying, which is why nobody catches it. The remits look clean and the payments look correct.

An SLP trained on PT conventions assumes everything is timed and splits a 45-minute 92507 session into three units. That claim draws an overbilling review.

The reverse costs more. An SLP who assumes everything is untimed bills one unit for a 90-minute AAC evaluation. Two legitimate 92608 units go unbilled.

Both errors come from the same gap. Nobody built a charge rule that separates the untimed set from the timed set, so the biller guesses. Fix the rule and both errors stop.

Can an SLP Bill This Code? A Scope Check for the Codes Providers Ask About Most

Google’s People Also Ask box fills up with scope questions. Providers want to know whether a code belongs to them before they care what it means.

Codes SLPs bill

The Yes column below covers the SLP CPT codes you report under a speech-language pathology plan of care. That takes in the 92526 CPT code for swallowing, the AAC set, and the cognitive codes. Each row names the condition that has to hold.

Codes SLPs should not bill

Chapter 11 of the NCCI Policy Manual is direct about this. SLPs don’t perform the services described by 97110, 97112, 97150, and 97530. CMS treats those as unbundled services already included in 92507, 92508, and 92526.

97533 gets its own rule. A single practitioner shouldn’t report 92507 or 92508 on the same date as 97533. An SLP and an occupational therapist can each deliver their own service. One billing entity may then report both with an NCCI-associated modifier.

You can read the current pairs in the CMS NCCI edits files. CMS updates them quarterly, and the SLP pairs shift more often than most billing teams expect.

Codes that depend on the payer

97129 and 97130 are the messiest codes in the SLP set. Some payers want cognitive-communication treatment under an SLP plan of care billed as 92507. Others require 97129 and 97130.

Medicare adds its own layer through NCCI and local coverage determinations. Verify this one per plan before you set a default in the charge master.

Can a Speech-Language Pathologist Bill This CPT Code?

Which Speech Therapy CPT Code Do You Use for This Condition?

Coding guides list cpt codes for speech therapy by number. Providers search by what’s wrong with the patient. The table below runs the other direction, so you can start from the presenting complaint.

Condition to code lookup

Each row is self-contained and maps a presenting condition to the SLP CPT codes that fit it. Pick the row that matches the referral. You get the evaluation code, the treatment code, and the diagnosis family that supports both.

Speech Therapy CPT Code by Presenting Condition

Two rows need a caveat. Central auditory function testing sits with audiology in most settings. AAC evaluations bill against the underlying communication diagnosis rather than a device code.

Pairing the ICD-10 to the CPT

The CPT says what you did. The ICD-10 says why it was necessary. Payers deny for medical necessity when the two disagree. The care can be appropriate and the note thorough, and the claim still denies.

CMS publishes the covered pairings in Article A54111. That article lists which diagnosis codes support 92507, 92508, 92521 through 92524, 92597, 92607 through 92609, 96105, 96112, and 96113.

The dysphagia series has its own rule inside that article. R13.0 and the R13.1x codes support a defined set of SLP procedures, including the 92526 CPT code. Pair them outside that set and you get a denial your appeal won’t fix.

That mapping is why dysphagia ICD-10 coding deserves its own review. Build the swallowing charge template after you’ve checked which diagnosis codes the article covers.

The diagnosis codes that carry the most weight

R41.841 covers cognitive communication deficit and it anchors most SLP cognitive claims. R47.81 covers slurred speech. R13.10 covers unspecified dysphagia, and R63.31 and R63.32 cover acute and chronic feeding difficulties.

The F80 series carries pediatric volume. F80.0 for phonological disorder, F80.1 for expressive language, F80.2 for mixed receptive-expressive language, and F80.81 for childhood onset fluency disorder.

Unspecified codes cost money in two ways. They invite medical necessity review on the front end. They also weaken the record when an auditor asks why a 20-visit episode was reasonable.

Speech Therapy Modifiers: GN, KX, and the Ones That Cause Denials

Modifiers sit outside the speech therapy billing codes themselves, and they cause more denials than the codes do. The code can be perfect and the claim still denies at intake because one two-character field was empty.

GN is not optional

GN identifies a service delivered under an outpatient speech-language pathology plan of care. CMS requires a discipline modifier on therapy claims. GN is the required modifier for speech therapy under Medicare Part B.

Miss it on a Medicare Part B claim and the contractor returns it. This is the most commonly missed modifier in the SLP set, and it costs nothing to fix in the scrubber.

The institutional rules go further than most billing teams realize. Under the Medicare Claims Processing Manual, revenue code 44x lines may carry only GN. No more than one discipline modifier goes on a single service line.

GN, GO, and GP also don’t belong on codes that sit outside the therapy code list. Respiratory and nutrition services get returned when someone appends a therapy modifier to them.

KX and the 2026 therapy threshold

The 2026 KX modifier threshold is $2,480 for PT and SLP services combined, with a separate $2,480 for OT. Claims above it without KX get denied.

KX is an attestation. Appending it says the service is reasonable and necessary and that documentation supporting that judgment sits in the record. It isn’t a checkbox that clears a system edit.

Auto-appending KX to every therapy line invites the audit you’re trying to avoid. Build a documentation checkpoint that fires as the patient approaches $2,480. A blanket rule on every claim does the opposite.

Two thresholds get conflated, and they do different jobs. The $2,480 KX threshold is a claims-processing gate that denies. The $3,000 targeted medical review threshold is a scrutiny risk, and CMS holds it at $3,000 through CY 2028.

GP and GO, and why the discipline modifier matters

GP identifies a physical therapy plan of care. GO identifies an occupational therapy plan of care. The modifier follows the plan of care under which the service was furnished.

Several competing guides state that GP is required when SLP services run under a PT plan of care. That describes a narrow co-treatment arrangement and presents it as a general rule.

Practices that bill across disciplines run into this. The physical therapy CPT codes set and the SLP set follow separate modifier logic on one claim.

The same holds for the occupational therapy CPT codes that carry GO. One line, one discipline modifier, matched to the plan of care that authorized the service.

Modifier 59 and the X modifiers

Modifier 59 marks a distinct procedural service when an NCCI edit would otherwise bundle two codes. It works when the services were separate. It draws audits when it’s used to force a payment.

XE, XS, XP, and XU are the more specific alternatives, and payers prefer them. The modifier 59 rules that apply to therapy claims are stricter than most teams assume.

Telehealth modifiers 95 and 93

95 signals a synchronous audio and video encounter. 93 signals synchronous audio-only. Medicare requires real-time audio and visual communication for therapy telehealth, and audio-only sessions carry extra restrictions.

Modifiers 52 and 22

52 flags a reduced service. It’s the correct handling when a 92523 evaluation covers language alone without speech sound production. 22 flags an unusually increased service and needs documentation that earns it.

The table below maps every modifier for speech therapy claims to the specific failure it prevents. Column four is the one worth reading twice.

Speech Therapy Modifiers and When Each One Applies

Modifier errors don’t announce themselves. They show up as a denial rate that drifts up two points a quarter. Nobody connects it to a two-character field.

Which Speech Therapy Codes Can Be Billed on the Same Day?

Plenty of cpt codes for speech therapy bundle against each other. Each subsection below gives the verdict first, then the bundling logic, then what to bill instead. Read the verdict and stop if that’s all you needed.

92522 and 92523 cannot be billed together

No. The 92523 CPT code already includes the speech sound production evaluation, so 92522 sits bundled inside it. Assess both and you bill 92523 alone.

Assess language without speech sound production and ASHA directs you to 92523 with modifier 52 for reduced services. Combining separate codes to capture the same work produces an overbilling flag.

Evaluation and treatment on the same date

Generally no. Most payers deny an evaluation code billed alongside a treatment code on the same date of service. The edit fires at adjudication before anyone reviews the claim.

Narrow payer-specific exceptions exist. They need modifier 59 and documentation supporting two distinct encounters. Verify with the payer before you file, because verifying afterward is an appeal.

92507 with 92526, 92609, and 97129

Sometimes for the first two, and no for the third when one practitioner delivers both. The mechanisms differ, so treat these as three separate rules.

92507 and the 92526 CPT code stand as separate services when both are medically necessary. Document each one against its own treatment goals, and the pair survives review.

The 92507 CPT code and 92609 work when the device programming is documented as distinct from the broader treatment session. Same clinician, same day, two documented purposes.

92507 and 97129 is where teams get it wrong. NCCI is explicit here. One practitioner shall not report 92507 or 92508 on the same date as 97129, 97130, or 97533. Modifier 59 doesn’t rescue that pairing.

An SLP and an occupational therapist can each furnish their own service. One billing entity may then report both with an NCCI-associated modifier. Different practitioner types is the condition that unlocks it.

92507 and 97530, and the PT code trap

High risk. 97530 is a physical medicine code, and NCCI policy treats it as already included in SLP treatment. PT logic doesn’t transfer to an SLP claim.

92610 with 92611 and 92612

High risk. These bundle as one swallowing assessment encounter, and modifier 59 doesn’t separate them on its own. A clinical swallow evaluation and an instrumental study on the same date need distinct clinical justification.

One more pair belongs here. NCCI states that G0283 shouldn’t be reported with 92526 for electrical stimulation performed during the swallowing procedure.

Same-Day Speech Therapy Code Pairs and What Each One Requires

Bundling denials repeat until somebody fixes the pairing rule. Resubmitting the claim clears one line. A root-cause denial review clears the next 10.

2026 Medicare Reimbursement Rates for Speech Therapy CPT Codes

The 2026 conversion factor and what changed

Medicare prices speech therapy CPT codes by multiplying relative value units by a single dollar figure called the conversion factor. For 2026 that figure is $33.40 for clinicians outside a qualifying alternative payment model, and $33.57 inside one.

Congress attached a 2.5% update for 2026, which is what moved the number up from the 2025 figure of $32.3465. ASHA’s ASHA 2026 fee schedule analysis carries the full code-level table.

ASHA reports the 92507 CPT code gained about 2% for 2026, reversing the 2% decrease it absorbed in 2025. At roughly 2.28 total RVUs against the $33.40 conversion factor, the national non-facility rate lands near $76.

Some published guides put 92507 above $85 for 2026. That figure doesn’t reconcile with the code’s RVUs or the conversion factor. Check any rate table against the CMS Physician Fee Schedule Look-Up Tool before you model from it.

CMS also applied a 2.5% efficiency adjustment to selected non-time-based codes for 2026. 92507 is exempt because it sits on the Medicare Telehealth Services List. ASHA on the 2026 final rule confirms that exemption alongside 92557.

96112 moved the other way with a 1% decrease. CMS also increased non-facility practice expense values and reduced facility values, which helps SLPs who work in private offices.

How a Medicare rate is actually calculated

Every rate starts as three RVU components: work, practice expense, and malpractice. CMS adjusts each by a geographic practice cost index, adds them, and multiplies by the conversion factor.

That geographic step is why the same code pays differently in Phoenix and Boston. Most rate tables you find online publish the national average and never mention locality.

One detail belongs in your 2026 modeling. ASHA flagged the 1.0 work GPCI floor as expiring after January 30, 2026 absent congressional action. Confirm its current status before you project low-cost locality rates.

Commercial and Medicaid rates work differently

Commercial payers pay a contracted allowed amount. Some peg it to a percentage of Medicare and plenty don’t. Medicaid varies by state and again by managed care plan.

Treat the Medicare rate as a reference point. It tells you the relative value of one code against another. It doesn’t predict what any given plan will pay you.

2026 Medicare Payment Changes for Speech Therapy CPT Codes

Getting paid is not the same as getting paid correctly

A claim can post, close, and still be short. Auto-posting without variance rules makes a 15% underpayment look identical to a correct payment on the aging report.

The dispute window closes while the balance reads zero. Nobody appeals a claim that shows as paid, so the money leaves for good.

The fix is operational. Compare the ERA against the contracted allowed amount at posting, line by line. Running that check at quarter-end is too late. Posting discipline is part of what medical billing at 2.99% covers for a therapy practice.

What Changed for Speech Therapy Billing in 2026

Remote therapeutic monitoring opened up

CMS added three RTM codes effective January 1, 2026. 98984 and 98985 cover device supply for short monitoring windows of 2 to 15 days inside a 30-day period. 98979 covers the first 10 minutes of clinician management time in a calendar month.

CMS revised 98976, 98977, and 98978 to specify 16 to 30 days of transmission. The practical rule is simple. Skip 98976 through 98978 when cumulative monitoring falls under 16 days. Skip the short-window codes under two days.

98980 has its own trap. Report it once per calendar month for the first completed 20 minutes, and the midpoint convention doesn’t apply. It also requires at least one real-time interactive communication with the patient or caregiver.

CMS designated 98979, 98984, and 98985 as sometimes-therapy services. GN applies when an SLP furnishes them under an outpatient plan of care. Update your medical coding audit scope to include the new charge rules.

The hearing device codes were replaced

The AMA retired CPT 92590 through 92595 on January 1, 2026. Twelve new codes running 92628 through 92642 replaced them. Claims filed on the retired codes fail once payers enforce the deletion.

Medicare still won’t pay for them. Federal statute excludes hearing aids and the exams that prescribe or fit them, so the new codes carry non-payable status. This matters for SLPs who share a practice with audiologists.

Telehealth became permanent, with a catch

Two separate things happened and practices keep merging them. CMS finalized permanent inclusion of select SLP codes on the Medicare Telehealth Services List, which is a policy win.

The authority to furnish those services runs on a clock. Section 6209 of the Consolidated Appropriations Act, 2026 extended that authority through December 31, 2027. It covers PTs, OTs, and SLPs alike.

That extension covers the telephone assessment and management codes 98966 through 98968. The list placement is permanent and the billing authority is not, which is the distinction that matters for 2028 planning.

CMS also made telesupervision permanent for PT, OT, and SLP. If you bill virtual visits, the telehealth CPT codes rules changed alongside the SLP set.

New ICD-10 codes for speech conditions

The FY2026 code set added diagnosis codes for speech and language conditions, including primary progressive apraxia of speech. Verify the exact codes against the current tabular list before you load them into a template.

Anyone telling you speech therapy CPT codes are unchanged for 2026 is working from a stale source. Three new RTM codes took effect January 1, 2026, and the 92507 CPT code disappears a year later.

CPT Code 92507 Is Deleted on January 1, 2027. Here Is What Replaces It

The AMA CPT Editorial Panel approved the deletion of 92507 at its September 2025 meeting. Ten new time-based codes replace it across five clinical categories. Each category carries a base code for the initial 30 minutes of direct one-on-one contact. Each also carries an add-on code for every additional 15 minutes. CPT 92507 stays valid through December 31, 2026. The new codes take effect January 1, 2027, and the AMA publishes the final numbers in September 2026.

What the AMA actually approved

CMS identified cpt code 92507 for review in 2024 after Medicare utilization grew enough to trigger a high-volume screen. That screen started the process that ends the code.

The 92507 CPT code has carried 1.30 work RVUs based on 60 minutes of total work time. Nobody had meaningfully revalued it in more than 15 years while the clinical work underneath it changed.

The communication around it got messy. ASHA told members in August 2025 that 92507 wasn’t being replaced anytime soon. The panel deleted it weeks later. ASHA has pointed to AMA confidentiality agreements as the reason it couldn’t say more.

The 10 new codes and how they are structured

The new SLP CPT codes come in five clinical categories, two codes each. The placeholder numbers in the panel documents run 92X0X through 92X9X. The AMA assigns real five-digit numbers when CPT 2027 publishes.

The Five Clinical Categories Replacing CPT 92507

92508 survives as a standalone untimed group treatment code. The AMA is revising it for 2027 with updated CPT instructions, and CMS proposed a work RVU decrease for it. Guides that call 92508 unchanged are wrong.

The unit math changes completely

Under 92507 you bill one unit per session, whatever the length. Under the new structure, the time you spend on each disorder area determines what you can bill.

Under the standard half-plus-one convention, a 30-minute base code is attained at 16 minutes. The add-on convention is where the profession is still waiting for clarity.

Compare it to the 2026 hearing device codes, which use the same base-and-add-on shape. ASHA states a clinician must provide the entire 30 minutes for 92628 before billing the 92629 add-on.

Apply that reading to the SLP family and a base plus one add-on needs far more than 24 minutes. Treat the add-on threshold as unsettled and confirm it per payer once CPT 2027 publishes.

The multi-disorder example is the one that changes scheduling. Treat language and fluency in the same visit and you need 16 minutes on each. That’s 32 minutes minimum before both base codes become billable.

Plenty of pediatric SLPs run 30-minute sessions. A 30-minute visit covering two disorder areas may not support two base codes. Solve that with the schedule in 2026 rather than with the claim in 2027.

The auditory processing gap

Auditory processing disorder appears by name in the current 92507 descriptor. It doesn’t appear in any of the five new clinical categories.

As of today there’s no confirmed treatment code for APD under the 2027 structure. A Code Change Application went before the CPT Editorial Panel at its April 30 to May 2, 2026 meeting.

Certainty tier on this one is unknown, and saying so is more useful than guessing. Practices with APD caseloads should watch the September 2026 CPT release.

What CMS proposed for payment

CMS released the CY 2027 Medicare Physician Fee Schedule proposed rule in July 2026. It accepted the RUC HCPAC-recommended work RVUs and direct practice expense inputs for all 10 new codes without changes.

CMS proposed designating the new codes always therapy and applying the multiple procedure payment reduction to the base codes. The proposed 2027 conversion factor sits at $32.8409, a 1.68% decrease for clinicians outside a qualifying APM.

CMS left proposed values for several of the new codes out of its first published table. ASHA flagged the omission and CMS published a corrected table.

The proposed CY 2027 KX threshold is $2,540 for PT and SLP combined and $2,540 for OT. The targeted medical review threshold stays at $3,000. Every figure in this subsection is proposed and not final until November 2026.

The pediatric G-code CMS invented

CMS proposed a new HCPCS code called GSLPP. It answers concerns that the new CPT codes miss the time and intensity of pediatric work. It covers individual treatment for the pediatric population up to age 21.

CMS proposed it as a service-based code, designated always therapy and subject to MPPR. Work time is 60 minutes performed by the billing practitioner. Proposed payment is $66.34, and CMS proposed adding it to the telehealth list.

Two things providers need to know. ASHA didn’t request GSLPP and is evaluating it. And because it’s a G-code, Medicare will use it while Medicaid and commercial plans may decline to.

The full timeline

CPT 92507 Deletion Timeline

What is still unknown

Four things remain unsettled. The final five-digit code numbers. The final RVUs. Commercial and Medicaid adoption timelines. And where APD treatment lands.

Anyone quoting you a firm 2027 payment per code right now is guessing. CMS makes all RVU determinations, and it won’t finalize them until November 2026.

Why Speech Therapy Claims Get Denied, and How to Fix Each One

Denials on speech therapy billing codes cluster. They don’t scatter. A practice running a 12% denial rate usually has three recurring causes behind it. Structured denial management services find them faster than working the queue claim by claim.

CO-16, missing or incomplete information

On SLP claims this traces to a missing GN modifier or an incomplete plan of care reference. It stops the claim at intake before adjudication. Correct it and resubmit as a corrected claim. The CO-16 denial code appeal path wastes weeks you don’t need to spend.

CO-50, not deemed medically necessary

This one traces to documentation rather than coding. A note showing identical accuracy percentages and identical cueing levels across 12 consecutive sessions reads as maintenance. Appeal a CO-50 medical necessity denial with objective progress data, or document the clinical reasoning behind a plateau.

CO-97, bundled into another service

The NCCI pairing problem from Section 7 arrives here as a denial. The usual triggers are 92507 with 97129, and 92522 with the 92523 CPT code. A CO-97 bundled service denial means the pairing rule needs fixing. The claim is the symptom.

CO-197, no prior authorization

Common in commercial and Medicaid SLP work where visit limits and authorization windows run tight. The auth usually existed and then expired mid-plan. Track a CO-197 authorization denial pattern against the schedule rather than against the claim.

CO-4 and PR-27

CO-4 means the procedure code is inconsistent with the modifier used, or a required modifier is missing. On therapy claims a missing modifier for speech therapy is the usual cause.

PR-27 means the patient incurred expenses after coverage terminated. Eligibility catches this one at the front desk, and billing never will. Recheck coverage on every date of service.

Common Speech Therapy Claim Denials and What Causes Them

Three denial codes usually account for most of what a speech therapy practice loses. Finding which three takes a week of pulling remits and sorting by cause.

MedSole RCM does that work inside full-service billing at 2.99% of collections. Denial management is included rather than billed as an add-on. If your SLP denials keep repeating, the pattern is already sitting in your data.

What Your Documentation Has to Prove for a Speech Therapy Claim

The plan of care and the certification window

The Medicare Benefit Policy Manual sets the floor. A payable outpatient therapy episode needs a written plan of care established before treatment begins. It carries diagnoses, long-term goals, and the type, amount, duration, and frequency of services.

Certification timing is where practices lose money without noticing. Certification is timely when the physician or non-physician practitioner certifies within 30 calendar days of the initial therapy treatment.

CMS added an exception for dates of service on or after January 1, 2025. A signed and dated order now counts. Pair it with one transmission of the plan of care to the referring provider within 30 days.

An expired or uncertified plan of care denies every claim under it until somebody documents recertification. That’s a revenue interruption wearing a paperwork costume.

What a payer is actually looking for

Three questions decide the claim. Does the diagnosis support the service billed? Does the note prove the service required a licensed SLP? Is progress tracked over time, or documented as a plateau with reasoning?

The second question is where most CO-50 denials start. Payers want clinical reasoning, real-time adjustments, and the specialized judgment that drove the session. Describing what the patient did doesn’t document what the SLP did.

A weak note and a strong note, side by side

Weak vs Strong Speech Therapy Documentation

Use this test on any note you’re unsure about. Hand it to somebody who has never met the patient. They should be able to reconstruct what happened, why an SLP was required, and whether the patient improved. If they can, the note survives an audit.

Charge capture connects the note to the claim. A clean superbill carries the diagnosis, the speech therapy billing codes, and the units. Your biller files it without guessing.

Speech Therapy Billing by Setting and Payer

Most guides to cpt codes for speech therapy write as though Medicare rules are universal. They aren’t. Check whether your discipline sits inside a partner’s coverage before you assume. The specialty-specific medical billing page answers that one.

Medicare Part B outpatient

GN required. KX past $2,480. Plan of care certified within 30 days. MPPR on multiple same-day therapy services, and that last one has a mechanic nobody states.

MPPR reduces the practice expense component by 50% for the second and subsequent always-therapy service on the same day. The service with the highest practice expense RVU pays at 100%. Work and malpractice components stay whole.

Clear up the cap confusion while you’re here. Medicare doesn’t cap medically necessary outpatient SLP services. It requires KX past the threshold and applies targeted medical review above $3,000. Medicare gates the claim rather than capping the service.

Commercial payers

Commercial plans pay a contracted allowed amount. Visit limits, authorization rules, and modifier requirements vary at the plan level. Two plans from the same carrier can run different rules.

For out-of-network patients who need continuity, a single case agreement can cover an episode when no in-network SLP is available.

Medicaid and school-based services

Speech therapy is an optional Medicaid benefit, so coverage, rates, and criteria are set state by state. Managed Medicaid plans then set their own fee schedules on top of the state baseline.

School-based billing runs through separate state programs with their own documentation rules. Some payers, mostly Medicaid, restrict same-day speech therapy and ABA billing. The sessions have to be non-overlapping, delivered by different clinicians, and documented against separate goals.

Home health and G0153

Under the home health benefit, SLP services report as G0153 rather than the outpatient CPT codes. The descriptor covers services performed by a qualified speech-language pathologist in the home health or hospice setting, each 15 minutes.

The taxonomy code that blocks enrollment

The NPI record, the CAQH profile, and the payer file have to agree. A mismatch rejects the application or denies claims after enrollment. It presents as a billing problem and lives in credentialing.

Fix it before the first claim. Medicare provider enrollment rejects files for wrong taxonomy faster than for almost anything else.

Speech Therapy Billing Rules by Payer Type

Taxonomy mismatches surface at the worst possible time. A provider has been seeing patients for six weeks and none of the claims will process.

MedSole RCM handles payer enrollment and credentialing at $99 per insurance panel. Most credentialing companies charge $150 to $500 per payer. If you’re adding an SLP or moving one to a new state, get that step right before the first claim.

How Speech Therapy Billing Actually Works, Start to Finish

Before the visit

Speech therapy CPT codes come last in this workflow. Verify eligibility and active coverage first. Confirm the SLP benefit itself. Plans carve speech therapy out separately from PT and OT more often than teams expect.

Check visit limits and remaining units. Confirm the authorization covers the date of service rather than the episode. Confirm the plan of care is current and certified.

At the visit

Capture the service and the disorder area. Record treatment minutes even on untimed codes, because 2027 will require them and the habit takes months to build.

Document skilled intervention, objective data, and cueing level. Then select the code that matches what you delivered rather than what the schedule said you would deliver.

After the visit

Scrub the 92507 CPT code and every other line before submission. Check the discipline modifier, the KX threshold, the diagnosis-to-procedure match, and NCCI pairs. Four checks, and they catch most of what denies.

Submit inside the payer’s filing window. The Medicare timely filing limit gives you 12 months, and commercial plans run much shorter clocks.

Post the ERA line by line against the contracted allowed amount. Work denials on speech therapy billing codes by cause within days. Then run unpaid claim follow-up by dollar value and filing deadline proximity.

Where the money leaks

Four failure points account for most of it. Eligibility verified for the practice but never for the SLP benefit. Authorization expired mid-plan with nobody tracking the date.

Then the two nobody sees. A claim paid below contract and auto-posted to zero. And a denial worked once, cause never corrected, same denial back next month.

That last one is why MedSole RCM runs root-cause correction inside full-service billing instead of selling it separately. These are workflow failures, and workflow is fixable.

How to Get Ready for the 2027 Speech Therapy Code Change

Start tracking session minutes now

Tracking minutes is the single most valuable habit to build before the new SLP CPT codes arrive. Under the 92507 CPT code, minutes were documentation. Under the new structure, minutes decide what you can bill.

Document by disorder area

Notes that describe a session in general terms won’t support a code family organized by disorder. Separate fluency work from language work from speech sound work in the record now.

Check your payer contracts for code numbers

Some commercial contracts name CPT codes by number. If the 92507 CPT code appears in yours, you may need an amendment before January 1, 2027. Start early, because amendments run on payer timelines.

Model your fee schedule against the new structure

CMS publishes final RVUs in November 2026. Model your commercial fees against the new base-and-add-on structure that month. December is too late to renegotiate anything.

Train both sides of the house

Clinicians need to document time and disorder specificity. Billing staff need base-plus-add-on logic and the midpoint math. Training one side without the other produces January denials.

Watch these four sources

The AMA for CPT 2027 code numbers in September 2026. CMS for final RVUs in November 2026. ASHA for interpretation. Your individual payers for adoption timelines, because commercial and Medicaid plans set their own.

One scheduling note for pediatric practices. If you run 30-minute sessions across two disorder areas, model whether that length still supports two base codes. Fix it with the schedule in 2026.

2027 Speech Therapy Code Change Readiness Checklist

Most of this is workflow rather than billing. Start tracking minutes, separate the record by disorder area, and pull your payer contracts before the fall.

You may prefer to hand off the fee schedule modeling and the claim scrub rebuild. That is the kind of work speech therapy billing services should be doing anyway.

Speech Therapy CPT Code FAQs

Is CPT 92507 speech therapy?

Yes. The 92507 CPT code is the core individual speech therapy treatment code. It covers treatment of speech, language, voice, communication, and auditory processing disorders. The code is untimed, so you bill one unit per session whatever the length. Medicare Part B claims need modifier GN. 92507 stays valid through December 31, 2026, and the AMA deletes it January 1, 2027. Ten time-based codes replace it across five clinical categories.

Is CPT 92526 speech therapy?

Yes. The 92526 CPT code is a speech-language pathology code. It covers swallowing and oral function for feeding rather than speech or language treatment. It’s untimed, billed once per day. The ICD-10 has to support a swallowing or feeding disorder. That usually means the R13.1x dysphagia series, or R63.31 and R63.32 for pediatric feeding. Confusing it with 92610, the clinical swallowing evaluation, ranks among the more common dysphagia billing errors.

Is CPT code 92610 speech therapy?

Yes. CPT 92610 is the clinical bedside evaluation of swallowing function, and speech-language pathologists perform it. It’s untimed, and it’s an evaluation code. 92526 is the treatment code that follows it. Bill 92610 for a session where you delivered swallowing treatment and you get a clean-looking claim that pays wrong. Instrumental studies use separate codes: 92611 for the modified barium swallow and 92612 for FEES.

Is CPT 97129 speech therapy?

Yes, with conditions. CPT 97129 covers therapeutic interventions focused on cognitive function, and SLPs bill it for cognitive-communication treatment. It’s timed, covering the initial 15 minutes, with 97130 for each additional 15. Two limits apply. Some payers want cognitive-communication work under an SLP plan of care billed as 92507 instead. And NCCI bars a single practitioner from reporting 92507 or 92508 on the same date as 97129 or 97130.

Can a speech therapist bill 97533?

No, in most cases. 97533 covers sensory integrative techniques. NCCI policy states a single practitioner shall not report 92507 or 92508 on the same date as 97533. The exception is narrow and involves different practitioner types. An SLP can furnish 92507 while an occupational therapist furnishes 97533 on the same date. One billing entity employing both may then report both with an NCCI-associated modifier. Documentation has to show two distinct services under separate plans of care.

Can you bill 92522 and 92523 together?

No. You can’t bill 92522 and 92523 on the same day. The 92523 CPT code already includes the speech sound production evaluation that 92522 describes, so 92522 sits bundled inside it. Assess both speech sound production and language, and you bill 92523 alone. Assess language without speech sound production and ASHA directs you elsewhere. Bill 92523 with modifier 52 for reduced services rather than combining separate codes.

Can you bill 92526 and 92507 on the same day?

Sometimes. 92507 and the 92526 CPT code describe separate services. You can report them on the same date when both are medically necessary. The documentation carries the weight here. Each code needs its own treatment goals, its own documented intervention, and its own justification in the plan of care. Payers that see identical goals across both codes deny the pair as duplicative. Check the payer’s same-day policy before filing, because checking afterward means an appeal.

Can you bill 92507 twice in one day?

No. CPT code 92507 is untimed, so you report one unit per session regardless of duration. A 30-minute session and a 60-minute session both produce a single unit. CMS instructs providers to report 92507 as a single encounter with one unit of service. Splitting a long session into multiple units triggers overbilling review. That structure changes January 1, 2027, when time-based codes replace 92507 and session minutes start driving the unit count.

What are the new CPT codes for speech therapy in 2027?

The AMA deletes cpt code 92507 on January 1, 2027 and replaces it with 10 new time-based codes. They cover five clinical categories. Three of them are fluency disorders, speech sound production disorders, and language comprehension and expression disorders. The other two are combined speech sound production and language disorders, and voice, upper airway dysfunction, and resonance disorders. Each category has a base code for the initial 30 minutes of direct one-on-one contact. An add-on code covers each additional 15 minutes. Placeholder numbers run 92X0X through 92X9X, and the AMA publishes final five-digit numbers with CPT 2027 in September 2026. No confirmed treatment code exists yet for auditory processing disorder under the new structure.

Is 92507 going away?

Yes. The AMA CPT Editorial Panel approved the deletion of CPT code 92507 at its September 2025 meeting. It takes effect January 1, 2027. It stays valid and billable through December 31, 2026, so nothing changes for the rest of this year. Ten time-based codes replace it. 92508, the group treatment code, survives as a standalone untimed code. The AMA is revising it for 2027, and CMS proposed a work RVU decrease.

What are the CPT codes for speech therapy in 2026?

The 2026 speech therapy CPT codes break into four groups. Treatment: 92507, 92508, 92526, and 92609. Evaluation: 92521, 92522, 92523, and 92524, plus 96105 and 96125 for aphasia and cognitive testing. Swallowing: 92610, 92611, 92612, 92613, 92616, and 92617. Specialty: the AAC codes 92605 through 92609 and the cognitive codes 97129 and 97130. Caregiver training uses 97550 through 97552 and the Medicare G-codes G0541 through G0543. CMS also added RTM codes 98979, 98984, and 98985 effective January 1, 2026.

How much should speech therapy billing cost?

Speech therapy billing services typically run 4% to 7% of collections. Many companies add setup fees, per-claim charges, or monthly minimums on top of that rate. Credentialing typically runs $150 to $500 per provider per payer, often with a monthly retainer alongside it.

MedSole RCM charges 2.99% of collections for full-service medical billing. Eligibility verification, coding review, claim submission, denial management, AR follow-up, and reporting are included. No setup fee, no long-term contract. Payer enrollment is $99 per insurance panel.

The math is easy to run. An SLP practice collecting $40,000 a month pays about $1,196 at 2.99%, against roughly $2,400 at 6%. Over a year that difference funds a part-time clinician.

Are speech therapy CPT codes timed or untimed?

Mostly untimed. Most SLP CPT codes bill once per session regardless of length: 92507, 92508, 92521 through 92524, 92526, 92609, and 92610. The timed exceptions matter. 92607 covers the first hour of the AAC evaluation, with 92608 for each additional 30 minutes. 97129 and 97130 run in 15-minute units. 96105 and 96125 bill per hour, and that hour includes scoring and report time. Caregiver training codes require the full interval under Medicare. On January 1, 2027, the main treatment codes become timed.

How do I bill for speech therapy services?

Start before the visit. Verify eligibility and confirm the SLP benefit itself, because plans carve it out separately from PT and OT. Confirm authorization covers the date of service, and confirm the plan of care is certified.

At the visit, capture the disorder area and record treatment minutes even on untimed codes. After the visit, scrub for GN, the KX threshold, the diagnosis-to-procedure match, and NCCI pairs. Submit inside the filing window, then post the ERA line by line against the contracted allowed amount.

Getting Speech Therapy Claims Paid in 2026 and Ready for 2027

What to do this week

Confirm GN sits on every Medicare claim carrying speech therapy CPT codes. Check whether your KX tracking fires at $2,480 or is still set to the 2025 figure. Both take an afternoon.

Pull a sample of paid 92507 claims and compare them against the contracted allowed amount. Start recording treatment minutes by disorder area. Search your payer contracts for the string 92507.

Speech therapy has run on untimed codes inside a system built for timed ones for two decades. That ends January 1, 2027. The practices that come through it cleanly are treating 2026 as preparation.