Molina Timely Filing Limit: The State-by-State Deadlines, Cited to Molina's Own Policy Documents

Molina has no single national timely filing limit. Medicaid deadlines come from each state contract and run from 90 calendar days to 365 calendar days. Medicare Advantage runs one calendar year. Marketplace varies by state, from 90 calendar days in California to 365 calendar days in Nevada and South Carolina.

The tightest window Molina publishes is 90 calendar days. It applies to participating providers in California and to New York. Three things control your deadline: the state, the line of business, and your provider agreement.

What Is the Molina Timely Filing Limit?

Timely filing is the maximum time a payer allows between the trigger date and the day it receives your claim. On professional and outpatient claims, that trigger is the date of service. On inpatient claims, it is the discharge date.

Molina runs four separate clocks. Miss any one of them and the balance comes off your books the same way.

Why Molina Does Not Publish One National Deadline

Molina holds a different contract with each state Medicaid agency, and the state writes the filing window into that contract. Your deadline is a function of geography. Aetna, UnitedHealthcare, and BCBS publish national commercial defaults. Molina can't, because it doesn't have one.

Teams that apply a single number across state lines fail in two directions. In a 365-day state, they stop working claims around day 100 and write off balances that were still collectible. In a 90-day state, they file on day 120 and collect CO-29 denials with no argument left to make.

Is Molina Healthcare the Same as Medicaid?

No, Molina Healthcare isn't Medicaid. Molina is a publicly traded managed care organization that contracts with state Medicaid agencies to administer benefits. Medicaid is the government program. A Molina member is a Medicaid beneficiary whose benefits Molina administers under a state contract.

That distinction changes your enrollment work. Signing up with your state Medicaid program doesn't enroll you with Molina, and Medicaid provider enrollment sits underneath Molina credentialing rather than replacing it. Molina also sells Medicare Advantage and Marketplace plans that aren't Medicaid at all, so confirm the line of business on the card before you calculate any deadline.

The Four Molina Filing Clocks You Are Actually Running

A claim can be timely and still get written off. The Molina timely filing limit you looked up covers the initial claim, and that's one of four clocks Molina runs, each starting on a different date.

The trigger date matters more than the day count. Ninety days from discharge lands somewhere different than 90 days from date of service, and both land somewhere else again than 90 days from a remittance advice date. Get the trigger wrong and your math is wrong before you start counting.

Molina's corrected claim policy uses all three trigger types across different markets. Arizona Medicare measures from the remittance advice. Texas Medicare measures from the date of service. Texas Marketplace measures from the most recent adjudication.

No single corrected-claim number covers Molina. Any guide quoting one is quoting a single cell out of a much larger grid.

These clocks don't pause for each other, either. A claim sitting in a corrected-claim queue keeps aging against the original filing window in several states, and a dispute you file late is gone even when the original claim went out on day two.

Molina Medicaid Timely Filing Limits by State in 2026

Every row below traces to a Molina provider manual, a Molina provider page, or a state regulation, with the source named in the row.

One rule governs the whole table. Rows without a confirmed primary source read verify in provider manual, rather than repeating a figure from another billing site. Several Molina numbers in circulation fail that test, and California is the clearest case.

Network status changes the answer in some markets, so the table splits participating and non-participating wherever Molina publishes both.

Molina operates 22 markets in 2026, and the table covers the ones carrying a confirmed published figure. For the enrollment side of those markets, see Molina credentialing by state.

The 90-Day Floor Most Guides Get Wrong

Search for the Molina California filing limit and most sources return 180 days, including Google's AI Overview. Molina's own California provider page publishes two numbers: 90 calendar days for participating providers, and 180 calendar days for non-participating providers.

The 180-day figure in circulation is the out-of-network number.

You lose money in one direction on that inversion. An in-network California practice working from 180 days files on day 120, thinks it's inside the window, and takes CO-29 on the whole batch. By the time the remittance posts, the deadline passed a month earlier, and there's no appeal argument left because the claim was late.

New York publishes 90 calendar days too, unless the provider contract says otherwise. Two of the larger Molina markets sit at 90 days while the guidance in circulation points at 180 and 95. Confirm network status before you read any number above. In California it's the difference between three months and six.

How to Read Your State's Row

Confirm network status first. The Molina timely filing limit splits by network in California, where participating and non-participating windows differ by a factor of two on the same published page.

Confirm the trigger date second. Inpatient claims run from discharge and outpatient from date of service in most Molina markets. A claim measured from the wrong end can look late when it isn't.

Confirm your contract third. Most Molina manuals carry a clause reading unless otherwise noted in your Contract. Your provider agreement can give you more time than the published default, or less, and the contract governs.

Pull that agreement before you build a worklist around any published number. Rows reading verify in provider manual mean unknown, so don't default them to 180 days.

Michigan Has Four Published Answers

Michigan shows what happens when old payer documents stay indexed. Molina's Michigan claims manual, revised January 2012 and still live, states 90 days from date of service. Google's AI Overview answers the Michigan question with 180 calendar days.

Molina's current Michigan provider manual states 365 calendar days. Molina's corrected claims policy lists Michigan at 365 days from date of service, or 90 days from the most recent adjudicated date.

Four documents, four numbers, one state.

The 2012 manual explains most of the confusion. It still ranks and it says 90 days, so billing sites keep republishing the figure without checking the date on it. That same document references ICD-9 and the 08-05 version of the CMS-1500, both retired years ago.

Use the date as your filter. Any Molina document mentioning ICD-9 predates October 2015 and doesn't govern a 2026 claim. Confirm Michigan against the current manual and your contract, and treat the 90-day figure as legacy.

Molina Medicare Advantage Timely Filing Limit

Molina Medicare Advantage runs one calendar year from the date of service, or from discharge on inpatient claims. Molina's California Medicare manual states it as one calendar year. The Nevada Medicare manual states 365 calendar days. Both describe the same window.

This line of business behaves differently from Medicaid. The federal floor applies across every Molina Medicare Advantage market, so there's no state-by-state variation to chase.

A patient carrying both Molina Medicare Advantage and Molina Medicaid generates two billing events on two clocks. The Medicare Advantage claim runs a calendar year from the service date. The Medicaid secondary claim runs on that state's window, measured from the Medicare EOB date rather than the service date.

Practices with heavy dual-eligible volume lose money on the second one. The primary goes out clean, someone marks the encounter closed, and the secondary ages past a 90-day COB window nobody was watching.

Molina Medicare Advantage is also separate from Original Medicare, which carries its own 12-month rule under a different authority. See the Original Medicare filing rule for that program's deadlines and exceptions.

Molina Marketplace Timely Filing Limit

Google's AI Overview puts Molina Marketplace at 180 days. Molina's own Marketplace manuals show the window moving by state as much as Medicaid does, and California runs at half the published figure.

California at 90 days and Nevada at 365 are both Molina Marketplace. That's a four-fold spread inside one line of business, confirmed in Molina's South Carolina manual and the matching state manuals for each row.

One naming correction is worth making, because it appears in a lot of published guidance. Molina sells its exchange products as Molina Marketplace. Ambetter belongs to Centene, a different company. Guides calling Molina's Marketplace plans Ambetter will point you at the wrong provider manual.

Molina Corrected Claim Timely Filing Limit by State and Plan

No national Molina corrected-claim window exists, and the Molina timely filing limit for a corrected claim rarely matches the one for the original. Molina's corrected claims policy publishes a grid across three lines of business and roughly 15 states each, with values running from 30 calendar days to 24 months.

What Molina's Corrected Claim Policy Actually Says

Every value above comes from Molina's corrected claims policy, with Nebraska confirmed in the 2026 Nebraska manual.

Look at the 30-day cluster. Arizona, Massachusetts, New York, and Virginia Medicare give you a month. A corrected claim sitting in a work queue for two weeks is already half expired.

Corrected-claim windows drift from initial-claim windows across most payers, not only Molina. The UHC corrected claim deadlines work the same way, on a separate clock from the original submission.

Frequency Codes and Field Locations

Frequency code 1 is an original claim. Code 7 is a replacement. Code 8 is a void or cancel.

On the UB-04, the frequency code is the third digit of the type of bill in field 4, and the original claim number goes in field 64. On the CMS-1500, the resubmission code and original reference number both go in field 22. Electronically, the original claim control number travels in loop 2300, REF segment, qualifier F8.

One constraint catches people out. An xx7 adjustment can't revise the pay-to provider number, the member ID, or the bill type. Those changes need a void and a fresh original claim.

Plenty of published guidance says frequency code 7 on the UB-04 without naming a field, which sends staff hunting through the form. It's field 4 for the code, field 64 for the original claim number.

A Denied Claim Is Not an Adjustment

Molina's policy draws a line most billing teams miss. Adjustments and voids apply to previously paid claims, including zero-paid claims. Resubmitting a denied claim isn't an adjustment.

Send a denied claim back as a frequency 7 replacement and it lands in the wrong workflow. Molina returns it for resubmission, the days keep running against the original date of service, and the team finds out when CO-29 arrives on what they logged as a corrected claim.

When Molina Is Secondary: The Coordination of Benefits Clock

Google's AI Overview puts secondary claims at 90 calendar days after the primary payer's final determination. In that same answer, it cites Molina's Illinois provider memorandum, and that memorandum says 60 days from receipt of the other insurer's EOB.

The confirmed spread across Molina's own documents runs wider than either figure suggests.

Washington carries a carve-out no competing guide covers. Claims submitted with the other insurer's EOB attached aren't subject to the standard timely filing restriction, though they still need to reach Molina within 180 days of you receiving that EOB. The Washington claims manual sets both conditions.

Attach the primary remittance to every secondary claim, and record the date you received that primary EOB. That date, rather than the service date, is what a COB timely filing appeal turns on.

Rejected Versus Denied: Why the Filing Clock Keeps Running

Molina's Illinois provider memorandum states the governing rule in one line: timely filing rules apply until Molina accepts the claim.

A rejection happens before adjudication, at the clearinghouse or in Molina's front-end edits, because something in the file was missing, invalid, or malformed. No claim on file, no denial code, no adjudication. A denial happens after adjudication, with a claim on file and a reason code attached.

A rejected claim never stopped the clock.

The days keep counting from the original date of service while that claim sits in a rejection queue. Treat a clearinghouse acceptance as proof of filing, without confirming Molina accepted it, and you'll lose the timely filing appeal on the receipt date alone.

Molina defines the receipt date as the date it receives written or electronic notice of the claim. Transmission isn't receipt. Acceptance at your clearinghouse isn't acceptance at Molina.

Work the 277CA rather than the 999, and keep rejection reports on a queue separate from denial reports. Different clocks, different actions. Your clearinghouse acceptance reports are the record that settles which one you're looking at.

What Molina Accepts as Proof of Timely Filing

Molina doesn't publish one national proof standard. The accepted evidence shifts by state, and at least one state's policy excludes the document most billing guides tell you to rely on when a Molina timely filing limit denial arrives.

A CO-29 appeal turns on this. The wrong evidence type loses an appeal the facts would have won.

Kentucky Publishes the Most Restrictive List

Molina's Kentucky Payment Policy 52 names the only acceptable proof of timely filing: a fax confirmation, or a registered postal receipt signed by a plan representative or a similar receipt from a commercial delivery service.

Look at what's absent from that list. The 277CA clearinghouse acknowledgment isn't on it. Neither is a portal confirmation screenshot.

Most published Molina guidance names the 277CA as the strongest proof the plan accepts, and tells practices to archive those reports for seven years. Kentucky's published list doesn't include it.

Confirm the accepted evidence types in your own state's policy before you build a CO-29 appeal around a document the plan may not take.

Illinois Accepts EDI Acceptance Reports

Illinois publishes a broader list: a computer print screen showing billed date, patient name, date of service, billed amount, submitted date, and insurance; EDI payor acceptance reports carrying those same fields; and an EOB from another payer recouping payment on a retroactive disenrollment.

The format requirement is where most submissions fail. A screenshot missing any of those six fields isn't proof. Train staff to capture the full field set rather than whatever happens to fit on screen.

Build the Evidence Packet on Day Zero

Proof of timely filing gets collected the day the claim goes out, not the day the denial arrives. By the time CO-29 lands, your 277CA may already be gone, since plenty of practices keep acknowledgments for 90 days and no longer.

The minimum packet holds the submission date and time, the frequency code used, the acceptance trail, the Molina remittance showing claim ID and adjudication date, and for COB the primary EOB with its determination date. Attach it to the claim record instead of filing it somewhere else. Denial management services that build this packet at submission recover CO-29 appeals that would otherwise fail on evidence.

How to Work a Molina CO-29 Timely Filing Denial

CO-29 is the claim adjustment reason code meaning the time limit for filing has expired. X12 maintains the claim adjustment reason codes, and the CO group code puts the balance on you rather than the patient.

A CO-29 appeal is an argument about dates. It says the claim met the Molina timely filing limit and the plan's receipt date is wrong. Send clinical justification instead and the plan upholds the denial, because medical necessity has nothing to do with why the claim failed.

X12 added remark code N921 effective March 1, 2026, covering an expired reconsideration or appeal deadline. N921 and CO-29 point at different failures. CO-29 means you missed the claim filing window. N921 means you missed the appeal window on a claim that was filed on time.

Confirm the Denial Is Actually Correct

Check the line of business first. A Medicaid window applied to a Marketplace claim is a payer error, and Molina runs different numbers on each.

Check network status second. California participating and non-participating windows sit 90 days apart, so a plan applying the wrong one hands you a clean argument.

Check the trigger date third. An inpatient claim measured from date of service instead of discharge can look late when it isn't. Check the state fourth, because legacy documents produce wrong internal references and Michigan's 2012 manual is the working example.

A share of CO-29 denials are correct and the claim was late. Confirming that early keeps appeal hours off an unrecoverable balance, which is worth something on its own.

Match the Argument to the Facts

Three arguments exist, and each one needs different evidence.

The claim was filed on time and Molina's receipt date is wrong. Your evidence is the acceptance trail in the format your state accepts.

A recognized exception extends the window, and your evidence is documentation of the exception itself. Or Molina applied the wrong window, and your evidence is the provider manual page or state rule, plus your agreement when the contract grants more time.

Name the argument in the first line of the submission and attach only what supports it. Mixed packages carrying clinical records alongside a dates argument get routed to the wrong review queue. Root-cause denial recovery starts with matching the evidence to the denial reason, the same way a CO-24 denial code needs a coordination argument rather than a dates argument.

Can You Bill the Patient After a CO-29?

Generally no. Molina's Michigan manual states that claims received beyond timely filing get rejected and members may not be billed for those services.

The CO group code carries that meaning across payers. Contractual obligation puts the write-off on the provider.

Verify against your provider agreement and your state Medicaid rules before you move any balance to patient responsibility. Balance billing Medicaid members carries regulatory exposure separate from the denial itself.

Molina Appeal and Dispute Deadlines by State

The appeal clock runs on its own, apart from the Molina timely filing limit that governed the original claim. Published guidance puts Molina Medicaid appeal windows at 60 to 180 days, and one competing source puts them at 30 to 60. Neither publishes a verified state figure. The windows below come from Molina's own state policies.

The Verified State Windows

Kentucky at 60 days and Florida Marketplace at one year bracket a twelve-fold spread inside the same payer.

New York's language runs broader than most. The 90-day window applies regardless of denial type, whether the service was denied, the payment came back wrong, or the issue was administrative. New York also wants any additional documentation inside 90 calendar days of the original dispute.

For markets not listed, the deadline prints on the denial notice. Under 42 CFR 438.404, Medicaid managed care plans must give timely and adequate notice of an adverse benefit determination, and 42 CFR 438.402 gives an enrollee 60 calendar days from the date on that notice to file a plan appeal.

One distinction gets blurred in most published guidance. Those federal windows govern enrollee appeals. Your provider claim dispute runs on your contract and the state's provider dispute rules, which is why Illinois gives providers 90 days while the federal enrollee clock reads 60. Don't calendar a provider dispute off the enrollee rule.

Appeal, Dispute, or Corrected Claim?

A corrected claim replaces a previously paid claim and runs on the corrected-claim clock. A claim dispute or reconsideration challenges how an adjudicated claim was processed. An appeal challenges an adverse benefit determination and, on Medicaid, escalates to a State Fair Hearing when the plan upholds itself.

Medicare Advantage escalates down a different ladder. Molina MA appeals go to a Qualified Independent Contractor, then an administrative law judge, and never to a State Fair Hearing. File a Medicaid appeal against a Medicare Advantage denial and you'll take a procedural denial that burns the window.

Medicaid MCO windows move plan by plan as well as state by state. The CareSource Indiana filing deadline and the Fidelis filing deadlines in New York run on different numbers than Molina does in the same markets.

Post-Pay Recovery and Recoupment: The 60-Day Window Nobody Publishes

Molina paid the claim. Months later it wants the money back through a post-payment record request or a recoupment. The original 365-day window closed long ago, so most teams log the balance as closed and write it off.

Molina's Kentucky payment policy says otherwise. A corrected claim needed after a post-payment record request, once the original timely filing limit has expired, comes due within 60 days from the date of that recovery request. If the recoupment already happened, the window runs 60 days from the recoupment date.

A recovery request opens a new, short clock.

Sixty days disappears fast when the notice routes to a mailroom or a general AR bucket instead of someone who recognizes what it started.

Washington shows the scale on the other side. Molina's overpayment recovery reaches 24 months from the paid date, and 30 months where coordination of benefits is involved, with 45 days to contest a refund request before the plan retracts payment.

Route every recoupment and record request to a named owner the day it lands, and calendar the 60-day corrected-claim window right then. AR follow-up services exist for exactly this failure, where the money stayed payable and the workflow lost track of who owned it.

Recognized Exceptions That Extend the Molina Filing Window

Retroactive eligibility. Coverage applied retroactively after the date of service moves the window to the date Molina receives notification from the state enrollment broker. Kentucky measures from the date eligibility was posted. Keep the retroactive enrollment notice with its date.

Coordination of benefits delay. The clock keys to the primary payer's determination or EOB date, on the state windows above. Keep the primary remittance showing that date.

Newborn enrollment. Illinois allows 180 days from the date you furnished the member's correct name and address. Keep documentation of when you supplied it.

Retroactive disenrollment. Illinois accepts an EOB from another payer recouping payment on a retroactive disenrollment as support for a late claim.

Court order, hearing decision, or statutory action. Illinois names this category. Keep the order or decision with its date attached to the claim.

System or fiscal agent error. Illinois names errors in Molina's processing and in the state fiscal agent's. Keep the correspondence or system notice documenting the failure.

Documented systemic disruption. Where a clearinghouse or payer outage blocked submission, keep the vendor's incident documentation with the affected claim range.

Molina's Virginia claims page states the retroactive eligibility rule directly, and the Illinois memorandum carries the rest.

Exceptions cover documented external circumstances. Routine billing errors, staffing gaps, and claims that sat in a work queue don't qualify. Submitting those as exceptions burns appeal capacity that belonged on recoverable claims.

Molina Payer IDs and Claims Addresses by State

Molina doesn't use one national payer ID, and the ID matters as much as the Molina timely filing limit itself. Molina assigns it by market, and sometimes by line of business inside a single market.

Send a claim on another state's payer ID and you get a rejection rather than a denial. The claim was never received, so the filing clock never stopped.

Ohio changed its Medicaid payer ID by provider bulletin in March 2026. Any payer ID list published before that date carries the wrong number for Ohio.

Connecticut: What Changed for Molina Claims on January 1, 2026

ConnectiCare integrated with Molina on January 1, 2026, following a $350 million acquisition that brought roughly 140,000 members into Molina's footprint.

Marketplace and Medicare claims with dates of service on or after January 1, 2026 go out on payer ID MLNCT. Claims dated before that stay on ConnectiCare's legacy submission process and legacy payer IDs.

Submit a 2025 date of service under the new payer ID and the plan rejects or denies it. A rejected claim doesn't stop the filing clock, so a batch sent on the wrong ID keeps aging toward the deadline while your system shows it as filed.

Commercial claims carry their own rule. Commercial dates of service in 2026 go out on payer ID 06105, and sending those on MLNCT draws the same rejection. Commercial member IDs start with the letter K. Marketplace member IDs run all-numeric, three to nine digits.

The filing window survived the transition at 180 calendar days after discharge for inpatient or date of service for outpatient, unless the participation agreement or a self-funded plan says otherwise. Corrected claims get 100 additional days beyond the original limit, a structure Molina doesn't use in any other market.

Connecticut brings Molina's active market count to 22, and each one needs its own enrollment before you can bill it. Provider enrollment services at MedSole RCM run $99 per insurance with no setup fee, and new-market enrollments move in parallel across payers rather than one at a time.

How to Prevent Molina Timely Filing Denials

1. Build a state and product deadline matrix. The key is state plus line of business plus network status, because California alone moves the window by 90 days on network status.
2. Set internal submission targets well inside the window. Aim for 7 to 14 days from date of service or discharge. In a 90-day market, filing on day 80 leaves no room to fix a clearinghouse rejection.
3. Monitor acceptance rather than transmission. Work the 277CA. A claim sitting in a rejection queue is an unfiled claim.
4. Keep rejections and denials on separate queues. They run on different clocks and need different actions from different people.
5. Prioritize the worklist by deadline proximity rather than balance. A $180 claim at day 85 in a 90-day market outranks a $2,400 claim at day 40 in a 365-day market.
6. Capture proof on day zero. The evidence you need for a CO-29 appeal is often gone by the time the denial arrives.

Most AR worklists sort by dollar value, which inverts the timely filing risk. The claims closest to their deadline carry the highest chance of becoming permanent write-offs, and dollar sorting buries them behind larger balances with months of runway left.

Most billing teams already know this list. Ownership is where it falls apart. Nobody holds the deadline matrix, so nobody updates it when a payer moves a window, and Ohio's March 2026 payer ID change breaks a workflow that ran fine for two years. Aged claim recovery works the queue by deadline proximity rather than balance size.

How Molina Compares to Other Payer Filing Limits

Molina runs harder than most commercial payers because the deadline moves with geography. Commercial payers publish a national default that your agreement can adjust. Medicaid MCOs publish a contract per state, and the contract is the only place the real number lives.

Aetna Better Health is the closest structural match to Molina. Both run Medicaid managed care lines with state-specific windows sitting underneath a commercial brand that publishes national defaults, and both punish a team that reads the national number and applies it to a Medicaid claim.

Getting Molina Claims Paid Without Missing a Deadline

Looking up one Molina timely filing limit takes a minute. Keeping the full matrix current across 22 markets, three lines of business, and four clocks, while also working the queue, is a staffing problem. That's why practices outsource it, rather than any gap in what their billers know.

What Full-Service Billing Costs at MedSole RCM

MedSole RCM provides full-service medical billing at 2.99% of collections.

That rate covers eligibility verification, prior authorization, coding review, charge capture, claim submission, payment posting, denial management, AR follow-up, and monthly reporting. Denial management and AR follow-up sit inside the percentage rather than billing as add-ons.

Full-service RCM commonly prices between 4% and 9% of collections, so 2.99% sits at the low end of the market for that scope. Practices wanting denial work on its own can take standalone denial management at 4.49% of recovered revenue.

Payer deadline tracking by state and line of business is part of the AR workflow at that rate. It isn't a premium tier.

What Molina Credentialing Costs

MedSole RCM handles credentialing at $99 per payer, flat, with no setup fee and no percentage-of-revenue pricing.

The scope covers CAQH profile setup and maintenance, payer enrollment application submission, weekly follow-up, recredentialing deadline tracking, and status reporting.

Single-payer credentialing commonly runs $300 to $600. At $99, enrolling one provider across five panels costs $495 instead of $1,500 to $3,000. MedSole RCM holds a 99% first-time approval rate, with commercial enrollments completing in 30 to 45 days across all 50 states.

Molina credentialing runs state by state, so a practice operating in three Molina markets needs three enrollments. Those move in parallel rather than one after another, which matters when a new market like Connecticut opens mid-year.

Molina Timely Filing Questions Providers Ask

What is the Molina Healthcare timely filing limit in 2026?

No single national limit applies. Molina Medicaid runs 90 to 365 calendar days depending on the state contract, Medicare Advantage runs one calendar year, and Marketplace runs 90 to 365 calendar days by state. The tightest published window is 90 calendar days, which covers participating providers in California and providers in New York.

Why does Molina's timely filing limit vary by state?

Molina is a Medicaid managed care organization that holds a separate contract with each state Medicaid agency, and the state writes the filing window into that contract. Commercial insurers publish one national default because they sell one national product. Molina sells a different contracted product in each of its 22 markets.

What is the Molina timely filing limit in California?

Ninety calendar days for participating providers and 180 calendar days for non-participating providers, measured from discharge for inpatient or date of service for outpatient. The 180-day figure published across most billing sites is the out-of-network number. In-network California practices working from 180 days file a month past their real deadline.

What is the timely filing limit for Molina Healthcare of Michigan?

Four different figures are in circulation. Molina's 2012 Michigan claims manual says 90 days, Google's AI Overview says 180 calendar days, the current Michigan provider manual says 365 calendar days, and the corrected claims policy lists 365 days from date of service or 90 days from the last adjudication. Confirm against the current manual and your contract.

Is Molina Healthcare the same as Medicaid?

No. Molina Healthcare is a publicly traded managed care organization that contracts with state Medicaid agencies to administer benefits. Medicaid is the government program itself. Enrolling with your state Medicaid program does not enroll you with Molina, and Molina also sells Medicare Advantage and Marketplace plans that are not Medicaid at all.

What is the Molina corrected claim timely filing limit?

It ranges from 30 calendar days to 24 months depending on state and line of business. Arizona, Massachusetts, New York, and Virginia Medicare sit at 30 days from the remittance advice. Washington runs 24 months. Ohio runs 365 days from the paid date across all three lines of business.

What is the Molina appeal timely filing limit?

The window is set by state and product. Kentucky Medicaid gives 60 calendar days from the adverse determination. Illinois, New York, and South Carolina Marketplace give 90 days. Florida Marketplace gives one year from the original remittance advice date. Molina Medicare Advantage gives 60 days from the unfavorable determination.

What does CO-29 mean on a Molina remittance?

CO-29 is the claim adjustment reason code for an expired filing time limit, maintained by X12. The CO group code makes it a contractual write-off, so the balance stays with the provider. A CO-29 appeal has to argue dates and receipt, since clinical documentation does not address the reason for the denial.

What proof does Molina accept for timely filing?

It varies by state, and the difference matters. Kentucky's payment policy names fax confirmation and a registered postal receipt as the only acceptable proof, leaving out the 277CA. Illinois accepts EDI payor acceptance reports and computer print screens carrying six specific fields. Check your state's policy before building the appeal.

What is Molina's payer ID?

Molina uses a different payer ID in each market. Virginia is MCC02, New Mexico is 09824, Washington is 38336, Texas Marketplace is 20554, and Michigan is 38334. Ohio Medicaid changed to 0007316 by bulletin in March 2026, and Connecticut Marketplace and Medicare moved to MLNCT on January 1, 2026.

Does a rejected claim count as timely filed?

No. Molina's Illinois memorandum states that timely filing rules apply until Molina accepts the claim. A rejection happens before adjudication, so no claim exists on file and the clock keeps running from the original date of service. Acceptance at your clearinghouse is not acceptance at Molina.

Can I bill the patient after a Molina timely filing denial?

Generally no. Molina's Michigan manual states that claims received beyond timely filing are rejected and members may not be billed for those services. The CO group code marks it a contractual write-off. Verify your provider agreement and state Medicaid rules before moving any balance to patient responsibility.

How much do medical billing services cost?

MedSole RCM provides full-service medical billing at 2.99% of collections, covering eligibility, coding review, claim submission, payment posting, denial management, AR follow-up, and reporting. Full-service RCM commonly prices between 4% and 9% of collections. Standalone denial management is available at 4.49% of recovered revenue.

How much does Molina credentialing cost?

MedSole RCM handles provider enrollment and credentialing at $99 per insurance, flat, with no setup fee. Single-payer credentialing commonly runs $300 to $600 across the market. MedSole RCM holds a 99% first-time approval rate, with commercial enrollments completing in 30 to 45 days across all 50 states.

How These Filing Limits Were Verified

Every Molina timely filing limit in this guide traces to a Molina provider manual, a Molina payment policy, a Molina provider page, or the governing state regulation. Rows without a confirmed primary source read verify in provider manual instead of repeating a figure published on another billing site.

Filing limits change, and a participating provider agreement can override any published default in either direction. Confirm the applicable window in the current provider manual and in your contract before you rely on any figure here.

Several Molina documents state different figures for the same market. Michigan carries four. This guide names every published figure in those cases and shows how to resolve them, rather than picking one and staying quiet about the rest.

Last reviewed September 10, 2026. Next scheduled review December 10, 2026.

Primary Sources Cited in This Guide

• Molina California, Non-Participating Providers
• Molina Michigan, Claims and Encounter Data manual
• Molina Illinois, timely filing provider memorandum
• Molina Washington, Claims manual section 8
• Molina Virginia, Claims Submission
• Molina Payment Policy 52, Timely Filing (Kentucky)
• Molina Reimbursement Policy, Corrected Claims
• Molina Nebraska, 2026 Provider Manual
• Molina South Carolina Marketplace, Provider Manual
• Molina Ohio, Payer ID Provider Bulletin, March 2026
• ConnectiCare, 2026 Integration with Molina Healthcare
• Ohio Administrative Code Rule 5160-1-19, Submission of medicaid claims
• eCFR, 42 CFR Part 438 Subpart F, Grievance and Appeal System
• X12, Claim Adjustment Reason Codes

This guide is maintained by MedSole RCM, a full-service revenue cycle management company handling medical billing at 2.99% of collections and provider credentialing at $99 per insurance.