Humana Timely Filing Limit: What Changed After the Commercial Exit, and the Five Windows That Apply in 2026

What Is the Humana Timely Filing Limit in 2026?

Humana doesn't publish one timely filing limit. Medicare Advantage gives you 365 days from the date of service. Medicaid runs anywhere from 90 days to 365 days depending on which state you're billing. TRICARE East gives you 365 days. The commercial window closed in 2024, when Humana left that business.

Here are the current Humana timely filing limits for claims, by plan type.

The most expensive assumption in Humana billing is that one number covers every card in your patient population. Billing teams shorthand all of it as the Humana TFL. There isn't one. A practice billing both Indiana Medicaid and Medicare Advantage is tracking two windows that sit 275 days apart.

Why There Isn't One Humana Timely Filing Limit

Humana runs five active lines of business in 2026, and each one measures the filing clock under a different rulebook. That's why any single published number is wrong for at least four of them.

Humana is a government programs payer now. Medicare Advantage sits under CMS regulation. Medicaid managed care sits under federal rules plus a separate contract with every single state. Military health runs through the Defense Health Agency. Three frameworks, three rule sources, three sets of deadlines.

Here's what that looks like on a Tuesday morning. Two Humana cards in the same schedule. One patient carries a Medicare Advantage plan with a 365-day window. The other carries Humana Healthy Horizons in Indiana, where the window is 90 calendar days.

Apply the first rule to the second claim and you get about nine months of false confidence before the denial lands.

Most practices don't need a better spreadsheet for this. What they need is someone working the aging report by filing deadline proximity, not just by dollar value. That's what our AR follow-up services do daily, and it's the difference between catching a Humana Indiana claim on day 80 and finding it on day 95.

Humana Medicare Advantage Is Not Original Medicare

Humana Medicare Advantage is a private plan under contract with CMS. It isn't Original Medicare, and it doesn't follow Original Medicare's filing rules. Fee-for-service Medicare gives you one calendar year from the date of service under 42 CFR 424.44. Medicare Advantage plans set their own windows inside a federal floor.

Different payer ID, different appeal ladder, different deadline. Same word on the card. If you want the fee-for-service side in detail, our Original Medicare filing rules guide covers the 12-month rule and its four exceptions.

Humana Medicare Advantage Timely Filing Limit: 365 Days

Humana Medicare Advantage requires initial claims within 365 days of the date of service. That number is a federal floor, not a figure Humana picked.

CMS sets the prompt payment framework for Part C plans under 42 CFR Part 422 Subpart K. Humana can't go below the floor. Your contract can.

Your Contract Can Legally Shorten the 365-Day Window

Read Humana's own claims guidance carefully and you'll find the qualifier. Claims go in within one year of the date of service, or as the provider agreement stipulates. Those last six words are the whole ballgame.

Some contracted Humana agreements specify 90 or 180 days. If your practice re-papered a Humana contract recently, pull it and read the timely filing clause before you assume you have a year. The Humana claims submissions guidance states the rule but your agreement overrides it.

The same CMS floor shapes how other plans handle timely filing Humana Medicare style, which is why the deadline looks similar across carriers. Our UHC Medicare Advantage deadlines breakdown shows where UnitedHealthcare lands on the same rule.

Dual Eligible Members: Watch Which Date Starts the Clock

Coordination of benefits is where the Humana Medicare timely filing limit gets misapplied most often. When Medicare pays first and a Humana plan pays second, the filing window for the secondary claim generally runs from the primary payer's remittance date, not from the date of service.

Practices that submit the secondary claim immediately after the visit, then wait on Medicare, sometimes come back to find the window measured from a date they weren't tracking. Verify which date your specific plan documents use before you build the workflow around it.

Humana Healthy Horizons Timely Filing Limits by State

Humana Healthy Horizons does not run one national timely filing window. Across the states where Humana publishes a figure, the spread runs from 90 calendar days in Indiana to 365 days in Louisiana and South Carolina.

Every row below comes from a Humana or state Medicaid document, and the source is named in the table. Nothing here is inferred from a national average.

Indiana PathWays Runs 90 Days, Not 365

Humana Healthy Horizons in Indiana requires claims within 90 calendar days of the date of service, and that window applies to in-network and out-of-network providers alike. It's the tightest Humana Medicaid window we could verify, and it's roughly a quarter of what most published guides quote for Humana Medicaid.

Indiana is not an outlier you can ignore. Humana Healthy Horizons operates in Indiana exclusively through PathWays for Aging, so any Humana Medicaid patient you see there falls under the short window. The Indiana Medicaid IHCP claims guidance states it plainly, and the Humana Indiana Medicaid claims page carries the submission detail.

Other Indiana Medicaid plans run the same 90-day standard, which our Indiana Medicaid MCO deadlines guide walks through. If you're enrolling providers in the state, our Indiana enrollment guide covers the PathWays layer.

Oklahoma Runs 180 Days, and the Correction Window Is Longer Than the Original

Humana Healthy Horizons in Oklahoma requires initial claims within 180 days (6 months) of the date of service or discharge, but allows 12 months for corrected claims. That inversion is unusual and almost nobody publishes it.

Read it again, because it runs opposite to how most payers work. Your original claim has half the window. Your correction has a full year. A claim that missed the 180-day mark on first submission isn't automatically rescued by that, but a claim filed on day 170 and denied for a coding error still has room to work.

Oklahoma providers billing SoonerSelect should confirm the figure against their own agreement. Our SoonerCare enrollment rules guide covers the OHCA side of the process.

Louisiana and South Carolina Both Run a Year, With Different COB Math

Louisiana requires claims and corrected claims within 365 days of the date of service. Encounter data is separate and runs on a 30-day clock, which catches teams that assume one submission satisfies both. When Medicare is primary, Louisiana gives you 180 calendar days from Medicare's EOB.

South Carolina also runs a year, measured from the date of service or discharge. Its coordination of benefits rule is more generous than any other state we verified: secondary payment can be submitted within 2 years from the date of service, or within 6 months of the Medicare remittance.

If you enroll in either state, our Louisiana Medicaid enrollment guide covers the LDH portal and the five-MCO landscape.

What to Do If Your State Isn't Listed

Humana does not publish a single public day count for every Healthy Horizons state. We verified four. The rest either aren't published in a generally retrievable provider document or vary by program inside the state, and we're not going to print a number we can't source.

Any guide that gives you one uniform figure for Humana Medicaid nationally is guessing. The federal ceiling under 42 CFR 447.45 requires states to have providers submit claims no later than 12 months from the date of service, but states and their managed care plans routinely set shorter windows underneath it.

For an unlisted state, pull the state-specific Humana provider manual or call the provider services line on the member's ID card. That takes 10 minutes and it's the only answer that holds up on appeal.

If you're billing Humana Healthy Horizons across more than one state, the deadline matrix isn't optional, it's the whole job. Our team maintains payer and state filing rules across all 50 states as part of standard billing management, so nobody on your staff has to keep four different Humana windows straight in their head.

Humana Corrected Claim Timely Filing: The Clock Usually Doesn't Reset

For Humana Medicare Advantage, a corrected claim runs on the original 365-day clock from the date of service. Filing the correction does not start a new window.

Do the arithmetic and the risk gets obvious. Your original claim denies for a billing error on day 300. You have the remaining 65 days, not a fresh year. Most practices find coding errors on remittances that arrive 60 to 90 days after service, then assume the correction buys them time.

It usually doesn't. Humana corrected claim timely filing on the Medicare Advantage side measures from the same date of service the original did.

Medicaid Changes the Math, and Oklahoma Proves It

Here's where the blanket advice falls apart. The Humana corrected claim timely filing limit is not universal across the book of business.

• Louisiana: claims and corrected claims both run 365 days from the date of service.
• South Carolina: claims and corrected claims both run 1 year from the date of service or discharge.
• Oklahoma: initial claims run 180 days, corrected claims run 12 months.

Three states, two different structures. Anyone telling you Humana timely filing for corrected claims is always 365 days from the date of service hasn't read the Oklahoma document.

Corrected Claim or Appeal? They Are Separate Tracks

A corrected claim and a timely filing appeal are two different adjudication paths, and submitting the wrong one delays both.

Use a corrected claim when the original had a billing error: wrong NPI, missing modifier, incorrect diagnosis. It goes in with frequency code 7 in Box 22, referencing the original claim number. Our frequency code 7 placement guide shows exactly where it sits on the form.

Use an appeal when the claim was filed on time and the payer's determination is wrong. Attaching an appeal argument to a corrected claim sends the same case into two queues, and neither one moves faster for it. The Humana Michigan D-SNP claims page shows how one state program routes each.

Secondary and COB Claims: The Clock Starts at the Primary EOB

When Medicare pays primary and Humana Healthy Horizons pays secondary, the filing window generally runs from the date on Medicare's Explanation of Benefits, not from the date of service.

Louisiana gives you 180 calendar days from Medicare's EOB of payment or denial. South Carolina gives you either 2 years from the date of service or 6 months from the Medicare remittance. Federal rules under 42 CFR 447.45 allow a Medicaid agency to pay a claim within 6 months after notice of the Medicare disposition, which is where the shorter state windows come from.

The EOB Attachment Is Not Optional

Attach the primary payer's remittance to the secondary claim. Every time. A COB claim that arrives without the primary EOB can't be verified as timely, so it denies on timeliness regardless of when you actually filed it.

That denial often shows up as a coordination of benefits code rather than a straight timely filing code, which sends billers looking in the wrong direction. Our CO-22 coordination denials guide covers how to read the difference.

Misdirected Claims: The Clock Starts When You Are Notified

If a claim went to the wrong carrier by mistake, the Humana timely filing period begins on the date the other carrier notified you of the error, not on the date of service. It's one of the few genuinely forgiving rules Humana publishes, and almost nobody uses it.

The catch is proof. Notification means something you can produce: a rejection letter, a remittance from the wrong payer showing the date, or a portal message with a timestamp. A phone call nobody documented won't survive review.

Save the rejection the day it arrives and note the date on the claim record. That single habit turns a dead claim into a filed-on-time claim.

CO-29 Denials: How to Prove You Filed Humana on Time

A CO-29 denial isn't appealable on argument. It's appealable on documentation, and the documentation has to show a submission date inside the filing window.

CO-29 is the standard Claim Adjustment Reason Code for a claim submitted past the deadline. On most remittances it travels with remark code N390. That's the whole definition, and it's the easy part.

Three Appeal Windows, and the Shortest One Catches People

The Humana appeal timely filing limit depends on the plan type, and the windows aren't close to each other.

• Medicare Advantage: 65 calendar days from the date on the denial notice, not the date you received it.
• Medicaid, Louisiana: 180 days from the remittance advice for a reconsideration request.
• Medicaid, Michigan D-SNP: 60 calendar days from the notice of claim outcome.
• Legacy commercial runout: 180 days from the denial date.

That 65-day Medicare Advantage window is the one that costs money. It's shorter than every Medicaid window on the list and far shorter than the 180 days a lot of billers carry in muscle memory from commercial work. Mail room delays eat into it, because the clock starts on the notice date.

The Humana reconsiderations and appeals page lists the current submission routes, and Resolutions.Humana.com handles online filing with a case number you can track.

What Humana Accepts as Proof of Timely Filing

Ranked by what actually survives review:

1. 277CA clearinghouse acknowledgment showing the submission timestamp inside the filing window. This is the strongest evidence you can produce.
2. Availity Essentials confirmation, the email or screenshot showing the filed date.
3. Certified mail return receipt with a postmark, for paper submissions.
4. Fax confirmation sheet showing date, time, page count, and recipient number.

Your clearinghouse generates a 277CA for every batch. Our clearinghouse 277CA reports guide covers which vendors make them easy to retrieve and which ones bury them.

Your Retention Policy Decides the Appeal

Store 277CA reports for at least seven years. Plenty of practices keep them 90 days and then purge for storage cost. That purge is what kills the appeal six months later, when the CO-29 finally surfaces on an aging report.

Here's the part that stings. The appeal was winnable. The acknowledgment existed. Somebody deleted it, and nobody had connected the retention policy to the denial queue. That's a workflow problem, not a billing problem, and it's one of the first things our denial management services fix during onboarding.

Humana Payer ID and Claims Addresses for 2026

Humana uses payer ID 61101 for medical and behavioral health claims and 61102 for encounter data. The mailing address depends on which Humana product the member holds and what you're sending.

Payer ID 61101 Covers Claims, 61102 Covers Encounters

Use payer ID 61101 for claims and 61102 for encounter data. Both submit through Availity Essentials at no cost, and electronic submission produces the acknowledgment you'll need if a CO-29 ever shows up on that claim.

The Humana payer ID is consistent across most medical lines, which is convenient right up until someone assumes it covers TRICARE East. It doesn't. Humana Military uses 99727.

Where to Mail a Humana Paper Claim

The Humana claims mailing address for most medical claims is P.O. Box 14601, Lexington, KY 40512-4601. Paper works, but it costs you more than postage.

Humana applies a $5 administrative fee on paper claims where the reimbursement amount is $10 or more. That's a real line item, and it's the concrete reason behind the generic advice to file electronically. Our claims submission services run everything through the clearinghouse for exactly this reason.

If you do file on paper, format matters. Our CMS-1500 field errors guide covers the fields that trigger returns before adjudication even starts.

The Two Appeal PO Boxes Are Not Interchangeable

P.O. Box 14546 is the provider clinical and administrative appeal path. P.O. Box 14165 is the member appeal and grievance form path, used when a provider files on a member's behalf with a signed Appointment of Representative form.

Mail an appeal to the wrong box and it doesn't bounce. It gets rerouted, which burns days off a 65-day window you couldn't afford to lose. Check the address on the denial letter before anything goes in an envelope.

TRICARE East and Humana Military: A Different Rulebook

Humana Military administers TRICARE East under a Defense Health Agency contract, and its timely filing rules come from 32 CFR 199, not from the Medicare Advantage or Medicaid frameworks that govern the rest of Humana's book.

Participating providers generally get 365 days from the date of service. The payer ID is 99727, not 61101, and routing TRICARE claims to the medical payer ID is a common and entirely avoidable rejection.

The Active Duty Service Member Waiver

The TRICARE timely filing guideline does not apply when the beneficiary was an Active Duty Service Member on the date of service. That exception appears in almost no billing content, and it recovers claims most teams write off without a second look.

There's a second, narrower exception. In documented circumstances such as an inability to communicate or mental incompetency without an appointed legal guardian, Humana Military may consider claims for services received in the six years preceding the request. Past six years, the claim is denied.

The Humana Military provider claims page carries the current submission detail. If you're joining the network, our Humana Military credentialing guide covers the East region certification process.

What Happened to Humana Commercial, and What the 2027 Exits Mean for Your AR

Humana announced its exit from the employer group commercial medical products business on February 23, 2023, and the wind-down completed in 2024. The 90-day commercial figure still circulating in billing guides describes a product line Humana no longer sells.

Humana Commercial Timely Filing: The 2019, 2022, and 2024 Versions

Part of the confusion is that the rule genuinely changed, more than once.

Search Humana timely filing limit 2020 and you'll still find the physician and facility split quoted as current. It isn't. That language belongs to a manual that was replaced twice over, describing plans that were then discontinued entirely.

The exit is documented in Humana's own commercial exit announcement and repeated in the provider notice. Medicare Advantage, Medicaid, military, and specialty lines were not affected.

If you still hold open Humana commercial AR from 2023 or earlier, the appeal window on those denials is 180 days from the denial date. Past that, they're generally unrecoverable. For a comparison against commercial payers that are still active, our Cigna filing deadlines guide covers a live equivalent.

The 2027 Plan Exits and Your Runout AR

On its second-quarter earnings call on July 29, 2026, Humana confirmed that 2027 plan exits will affect roughly 600,000 Medicare Advantage members. CFO Celeste Mellet put that at about 8% of the company's 7.2 million MA membership, concentrated in plans rated 3.5 stars or lower.

Federal rules require the non-renewal notices to be dated October 2. Affected coverage ends December 31, 2026.

Three billing consequences nobody is talking about.

1. Runout AR. When those plans terminate on January 1, 2027, you'll still be holding up to 365 days of claims on 2026 dates of service against plans that no longer exist. Those claims are still billable. They're also easy to deprioritize.
2. Re-contracting risk. Providers who re-paper a Humana agreement for 2027 need to read the timely filing clause again. The federal floor is 365 days, but the individual agreement can go shorter, and a fresh contract is exactly where that happens.
3. Muscle memory. Don't assume Medicare Advantage means a year on a contract you signed in late 2026. Check the clause, not the category.

If your aging report is carrying Humana balances you haven't touched since summer, that's the pile to work first. Our aging claim recovery process sorts open AR by deadline proximity rather than by balance, which is the only sort order that matters when a plan is about to disappear.

Humana Timely Filing Limit FAQs

What is the Humana timely filing limit for claims?

There isn't a single figure. Medicare Advantage runs 365 days from the date of service. Medicaid depends on the state: 90 days in Indiana, 180 days in Oklahoma, and 365 days in Louisiana and South Carolina. TRICARE East runs 365 days.

The Humana claims timely filing limit that applies to you is determined by the plan on the member's card and, for contracted providers, by your participation agreement. Check both before you calendar a deadline.

How long do you have to file a claim with Humana?

Between 90 days and 365 days, depending on the plan. Medicare Advantage and TRICARE East give you a full year. Humana Healthy Horizons Medicaid gives you 90 days in Indiana, 180 days in Oklahoma, and a year in Louisiana and South Carolina.

The Humana TFL limit your contract specifies can be shorter than the published default. Contracted agreements override the general guidance, so the clause in your agreement is the number that governs.

What is Humana's timely filing for appeals?

Medicare Advantage reconsiderations are due within 65 calendar days of the denial notice date, not the date you received it. Louisiana Medicaid allows 180 days from the remittance advice. Michigan D-SNP allows 60 calendar days from the notice of claim outcome.

The Humana appeal timely filing limit is shortest on the Medicare Advantage side. Calendar it at 50 days to leave room for documentation, since the Humana Medicare appeal timely filing limit doesn't extend for mail delays.

What is the Humana TFL for submitting a corrected claim?

For Medicare Advantage, a corrected claim runs on the same 365-day clock from the date of service as the original. The correction does not reset the window. Find an error on day 300 and you have 65 days left, not a fresh year.

Medicaid differs by state. Oklahoma allows 12 months for corrected claims against 180 days for originals, so the Humana timely filing limit for corrected claims there is actually longer than the initial window.

What is the timely filing limit for Humana Medicare claims?

365 days from the date of service for Medicare Advantage. That figure reflects the CMS prompt payment framework for Part C plans under 42 CFR Part 422, which Humana's published claims policy matches.

The Humana Medicare timely filing limit can be shortened by your individual provider agreement. CMS sets a floor, not a guarantee, so contracted practices should confirm the clause rather than assume the default.

What is the Humana payer ID?

Humana uses payer ID 61101 for medical and behavioral health claims and 61102 for encounter data. TRICARE East claims go to Humana Military under payer ID 99727, which is a separate destination entirely.

Both Humana payer ID values submit through Availity Essentials at no cost. Paper claims go to P.O. Box 14601, Lexington, KY 40512-4601, and carry a $5 administrative fee when reimbursement is $10 or more.

What are the common Humana denial codes?

CO-29 means the claim was filed past the deadline. CO-197 means prior authorization was missing. CO-16 means information was incomplete. PR-96 means the service is not covered. CO-22 means another payer should pay first.

CO-29 and CO-22 frequently appear together on coordination of benefits claims, which sends billers chasing the wrong fix. Read the remark code alongside the reason code before deciding whether to correct or appeal.

Can you bill the patient after a Humana timely filing denial?

Generally no. For participating providers, a timely filing denial is a contractual write-off, and most participation agreements bar balance billing the patient for a deadline the practice missed. The patient did nothing wrong.

The specific answer lives in your participation agreement and in state balance billing law. Check both before any statement goes out, because billing the patient improperly creates a compliance exposure larger than the claim.

Is Humana under Medicare?

Humana Medicare Advantage is a private plan under contract with CMS, not Original Medicare. It covers Medicare benefits, but it sets its own filing windows, runs its own appeal ladder, and uses its own payer ID.

That distinction changes the deadline. Original Medicare allows one calendar year under 42 CFR 424.44. A Humana Medicare timely filing question is a Medicare Advantage question, and the two are governed separately.

How do I prove timely filing to Humana?

A 277CA clearinghouse acknowledgment showing your submission timestamp inside the filing window is the strongest proof. An Availity Essentials confirmation, a certified mail return receipt with a postmark, or a dated fax confirmation also work.

Store those records for at least seven years. Humana TFL for claim submission disputes turns entirely on documentation, and practices that purge acknowledgments at 90 days lose appeals they would otherwise win.

Working Humana Deadlines Without Losing Claims

Humana deadlines fail on process, not on knowledge. Most billing teams can recite the numbers. What they don't have is a system that applies the right number to the right plan type before the window closes.

Three things fix most of it.

• Build the deadline matrix by plan type and state, not by payer name.
• Store 277CA acknowledgments for seven years, not 90 days.
• Re-read the timely filing clause on any Humana contract re-papered for 2027.

Do those three and the Humana timely filing limits stop being a recurring write-off line.

If tracking five Humana windows across your payer mix isn't work your team should be doing, it's work we do. MedSole RCM runs full-service outsourced medical billing at 2.99% of monthly collections, covering eligibility, coding review, claim submission, denial management, AR follow-up, and reporting under one rate. Most billing companies charge 4% to 7%, often with setup fees and per-claim add-ons on top.

Credentialing runs $99 per payer enrollment, against a typical market range of $150 to $300. Same team, same rate card, no separate vendor to manage.

Got open Humana AR you're not sure is still recoverable? A free billing analysis will tell you which claims are inside the window and which ones aren't, before the 2027 plans terminate and the runout clock starts.

Sources

Every figure in this guide comes from a Humana provider document, a state Medicaid publication, or the Code of Federal Regulations. Verified September 2026.

• 42 CFR 424.44, time limits for filing Medicare claims
• 42 CFR Part 422 Subpart K, Medicare Advantage contracts and prompt payment
• 42 CFR 447.45, timely claims payment under Medicaid
• Humana claims submissions guidance
• Humana reconsiderations and appeals
• Humana Indiana Medicaid claims and payments
• Humana Michigan D-SNP claims and payments
• Indiana Medicaid IHCP Humana claims guidance
• Humana Military provider claims
• Humana commercial exit announcement, February 23, 2023
• Resolutions.Humana.com appeals portal

Timely filing windows are governed by your participation agreement and by state contract. Verify the applicable window against your own agreement and current payer instructions before relying on any published default.