Every state runs its own Medicaid program inside one national frame. This reference covers the state medicaid programs a biller meets first: who the single state agency is, where a provider enrolls, and how long fee-for-service claims have to file, with each row sourced to the state’s own sites.
How state Medicaid programs are built
Every state Medicaid program rests on one national skeleton. Federal law requires a single state agency to administer or supervise the program, a rule held at 42 CFR 431.10. That agency writes a state plan, contracts a vendor to process claims, and enrolls providers through a portal. The names differ by state; the parts do not.
Two payment paths run side by side. Fee-for-service pays the provider directly from the state. Managed care pays a health plan a per-member amount and the plan pays the provider, under the rules at 42 CFR 438. Which path a claim travels decides which manual holds the filing limit, so confirm it before you look up a single number.
| Layer | What it is | Why a biller cares |
|---|---|---|
| Single state agency | The one agency the federal government holds accountable for the program. | It owns the state plan and the rules an appeal cites. |
| Fiscal agent or claims contractor | A vendor that processes and pays fee-for-service claims for the state. | It runs the portal, issues the remittance and sets the mailing address. |
| MMIS and enrollment portal | The Medicaid Management Information System where providers enroll and check claims. | Enrollment must be complete before a claim is payable. |
| State plan and provider manual | The written coverage and billing rules for each provider type. | The manual, not a billing blog, states your filing limit. |
| Fee-for-service (FFS) | The state pays the provider directly for each covered service. | FFS claims go to the state or its fiscal agent. |
| Managed care | A health plan takes a set payment per member and pays network providers. | The plan manual sets the limit for an enrolled member. |
| Waiver authority | A federal permission that remakes part of the program. | It can move a service, and the payment, to a different payer. |
A Medicaid filing limit is a state rule. The 12-month figure at 42 CFR 447.45 is a ceiling a state may not exceed, and it is not the deadline in most states. Read the state’s own manual for the number that binds a claim.
Fee-for-service and managed care decide who gets the claim
Confirm the member’s delivery system before you search for a deadline. A member enrolled in a managed care plan sends the claim to that plan, not to the state, and the plan’s manual sets the limit. Most states now cover the majority of members through managed care, so the plan document often governs and the state figure acts as a floor.
| Path | Who receives the claim | Where the filing limit lives |
|---|---|---|
| Fee-for-service | The state Medicaid agency or its fiscal agent. | The state provider manual or administrative code. |
| Managed care | The member’s health plan (an MCO, PHP or PIHP). | The plan’s own provider manual and contract. |
| Behavioral health carve-out | A specialty plan the state pays separately for that service. | The carve-out plan’s provider manual. |
| Medicare crossover | The state, after Medicare adjudicates first. | The state crossover chapter plus the Medicare one-year rule. |
A claim sent down the wrong path returns as a rejection while the filing clock keeps running. Check the plan assignment on the eligibility response before the first claim leaves the office, the way an insurance verification checklist front-loads the same work.
A member can carry a plan name on the card and still have a service carved out to a separate behavioral health plan. Match the service to the plan that adjudicates it, not to the logo on the card.
The waiver types that change who pays
Waivers let a state bend the standard rules, and each authority can move a service to a different payer. A service that is fee-for-service in one state can sit under managed care or a waiver program in another, which changes both the manual and the filing clock.
| Authority | What it does | Who adjudicates the claim |
|---|---|---|
| 1115 demonstration | Lets a state test a broad change, such as an expansion or a work requirement. | Often a managed care plan or a separate program. |
| 1915(b) freedom of choice | Permits mandatory managed care or a primary care case manager. | The capitated plan or the case manager. |
| 1915(c) home and community based services | Funds home and community based services as an alternative to institutional care. | Usually fee-for-service, sometimes a specialized plan. |
| 1915(i) state plan HCBS | Adds home and community based services as a state plan benefit without a full waiver. | The state, under the state plan. |
| 1915(k) Community First Choice | Pays for personal assistance and attendant services as a state plan option. | The state or its designated contractor. |
Name the authority on the claim path. When a home health or behavioral health service sits under a waiver, that authority decides the payer, so the member’s general card is not the final word.
Identify the waiver authority first, then the entity that adjudicates the claim, and only then the filing limit. Working the three in reverse is how a claim lands on the wrong desk.
State Medicaid programs: agency, enrollment and filing limit
The table below covers eleven state Medicaid programs picked to span the range: the shortest and the longest filing windows, managed care heavy and fee-for-service heavy programs, and several of the largest in the country. Each row names the single state agency, the enrollment route and the fee-for-service filing limit, and every cell links to the state’s own site or provider manual.
Fee-for-service filing windows in this reference, in days from the date of service
Source: each state’s own provider manual or administrative code, as linked in the table above, among them the New York eMedNY billing manual, the Ohio Administrative Code rule 5160-1-19 and the Illinois HFS timely filing page.
Filing windows here run from 90 days to a full year. New York at 90 days and Texas at 95 are the shortest, and the 12-month states sit at the federal ceiling. That spread is why a claim calendar built for one state fails in the next one over. The payer-by-payer version of this work sits in timely filing limits by payer.
42 CFR 447.45 lets a state require claims no later than 12 months out. A state may set anything shorter, and many do, from 90 days to 180. Never quote the federal ceiling as a given state’s deadline.
For a member in a plan, the plan manual is the binding document. Several plans mirror the state window; others set their own, and some are shorter for behavioral health or out-of-state services.
How to find any state’s own rules fast
When you take on a state you have never billed, work in this order. It keeps you on the state’s own documents and away from summaries that go stale.
- 01
Find the single state agency
Search the state name plus Medicaid and land on the dot-gov agency site, not a billing vendor. That agency owns the program rules.
- 02
Open the provider manual
The agency or its fiscal agent hosts a manual for each provider type. The filing chapter usually sits in the general or claims section.
- 03
Locate the enrollment portal
Enrollment runs through the state MMIS or a named system such as TMHP, eMedNY, CHAMPS or GAMMIS.
- 04
Read the filing chapter
Confirm the number of days and the start date, then read the exceptions. Inpatient claims often count from discharge, not admission.
- 05
Confirm fee-for-service or managed care
If the member is in a plan, the plan manual sets the limit. The state number is a floor for many plans.
A billing vendor’s state page is a place to start a search, never the source for a number. The state agency site, its fiscal agent and the provider manual are the documents that own a filing limit.
Reading a filing limit: the start date changes everything
Two states can share a 365-day limit and still catch different claims, because the clock does not always start on the date of service. Inpatient stays, retroactive eligibility and crossover claims each move the start date.
| Claim type | Typical start date | Example from the table |
|---|---|---|
| Outpatient or professional | The date of service. | Most states count from the date of service. |
| Inpatient hospital | The date of discharge. | Ohio counts 365 days from discharge for inpatient claims. |
| Retroactive eligibility | The date coverage is added or determined. | Michigan allows six months after the determination date. |
| Medicare crossover | The date Medicare acts, inside a cap. | Florida allows the greater of 36 months from service or 12 months from Medicare. |
| Third-party liability | The date the other payer resolves the claim. | Tennessee starts the clock when the third party documents resolution. |
Filing windows among the eleven state programs here
Source: count of the eleven state programs in this reference, tabulated from the state manuals and administrative codes linked in the table above.
Write the start date next to the number on your claim calendar. A 365-day window that begins at discharge gives a long inpatient stay far more time than one that begins at admission.
A pre-filing checklist for an unfamiliar state
Run this list the first time a new state’s claims reach the billing queue.
- Name the state’s single agency and confirm it in the state plan.
- Confirm the member’s plan assignment before the first claim goes out.
- Find the filing limit in the state or plan manual, not a vendor summary.
- Write the start date down: date of service, discharge date or eligibility date.
- Check the exceptions and the delay reason code the state requires.
- Set the Medicare revalidation clock too if the practice bills Medicare (Medicare revalidation).
A filing limit helps only if the deadline is on a shared calendar with a named owner. Set the alert at least 30 days before the state window closes, because a cleared eligibility problem can still push a claim past the line.
Questions practices ask us about this
Who runs a state Medicaid program?
One state agency administers or supervises the program, a structure federal law requires at 42 CFR 431.10. That agency writes the state plan, sets coverage and billing rules, and hires a fiscal agent to process claims. In Texas it is the Health and Human Services Commission; in California it is the Department of Health Care Services. The agency, not a health plan, owns the fee-for-service filing limit.
Is the 12-month Medicaid filing limit the same in every state?
No. Federal law at 42 CFR 447.45 sets 12 months as the outer ceiling a state may allow, and states routinely set a shorter window. In this reference, New York allows 90 days, Texas 95, and Illinois and Georgia 180, while Florida, Ohio, Michigan, Wyoming and Hawaii allow the full year. Confirm the number in the state’s own manual before you rely on it.
How do I find a state’s Medicaid filing limit?
Start on the single state agency’s website, open the provider manual for your provider type, and read the claims filing chapter. Confirm the number of days and the date the clock starts. If the member is in a managed care plan, read that plan’s manual, which can be shorter. Do not take the number from a billing vendor’s blog, because those pages go stale.
Does managed care change a Medicaid filing limit?
Often, yes. When a member is enrolled in a health plan, the claim goes to that plan and the plan’s provider manual sets the filing window, which can be shorter or longer than the state fee-for-service rule. States that are managed care heavy, such as Tennessee and Hawaii, put most claims in plan hands, so the plan document, not the state ceiling, is what your team should calendar.
What happens when a Medicaid claim is filed late?
The payer denies it as untimely, and the provider usually cannot bill the patient to recover the balance. A late claim is not the same as a rejected one: a rejection can be corrected and resubmitted inside the window, while a timely filing denial needs a documented exception. States list narrow exceptions, such as retroactive eligibility or a delay outside the provider’s control.
Where does a provider enroll in a state Medicaid program?
Enrollment runs through the state’s Medicaid Management Information System or a named portal. Examples include TMHP in Texas, eMedNY in New York, CHAMPS in Michigan and GAMMIS in Georgia. Enrollment must be complete, and the provider must hold an active agreement, before the state pays a claim. Confirm the portal on the state agency site rather than through a search ad.
Why does the filing start date matter as much as the limit?
Because a fixed cap counted from the wrong start date can expire a claim you believe is open. Most states count from the date of service, but inpatient claims often count from discharge, retroactive eligibility from the date coverage is added, and crossover claims from the date Medicare acts. Write the start date and the limit together on the claim calendar.
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Book a free billing review- eCFR, 42 CFR 431.10, Single state agency. ecfr.gov/current/title-42/chapter-IV/subchapter-C/part-431/subpart-B/section-431.10
- eCFR, 42 CFR 447.45, Timely claims payment (12-month ceiling). ecfr.gov/current/title-42/chapter-IV/subchapter-C/part-447/subpart-A/section-447.45
- eCFR, 42 CFR Part 438, Managed care. ecfr.gov/current/title-42/chapter-IV/subchapter-C/part-438
- Texas, TMHP Texas Medicaid Provider Procedures Manual, Claims Filing. tmhp.com/sites/default/files/file-library/resources/provider-manuals/tmppm/pdf-chapters/2026/2026-01-january/1_06_claims_filing.pdf
- California DHCS, Medi-Cal Provider Enrollment. dhcs.ca.gov/provgovpart/Pages/ProviderEnrollment.aspx
- Medi-Cal Provider Manual, CMS-1500 Submission and Timeliness Instructions. mcweb.apps.prd.cammis.medi-cal.ca.gov/file/manual?fn=cmssub.pdf
- New York eMedNY, Information for All Providers, General Billing. emedny.org/providermanuals/allproviders/pdfs/information_for_all_providers-general_billing.pdf
- Florida AHCA, Medicaid Provider General Handbook. ahca.myflorida.com/content/download/7012/file/59G_5020_Provider_General_REQUIREMENTS.pdf
- Tennessee, TennCare Policy PAY 13-001, Timely Filing. tn.gov/content/dam/tn/tenncare/documents2/pay13001.pdf
- Hawaii Med-QUEST, Provider Bulletin, Filing Deadline Waiver. medquest.hawaii.gov/content/dam/formsanddocuments/provider-bulletins/fee-for-services/Provider_Bulletin_March_2021.pdf
- Wyoming Medicaid, Provider FAQs (timely filing). wyomingmedicaid.com/portal/ProviderFAQs
- Michigan MDHHS, Bulletin MSA 16-37, timely filing policy. michigan.gov/-/media/Project/Websites/mdhhs/Folder1/Folder92/MSA_16-37.pdf
- Illinois HFS, Timely Filing Claim Submittal for Non-Institutional Providers. hfs.illinois.gov/medicalproviders/noninstitutional/timelyfiling.html
- Ohio Administrative Code, Rule 5160-1-19, Submission of Medicaid claims. codes.ohio.gov/ohio-administrative-code/rule-5160-1-19
- Georgia GAMMIS, provider claims policy (180-day submission rule). mmis.georgia.gov/portal/portals/0/staticcontent/public/all/notices/fqhc-rhc%20webinar-final%205.11.21%20may%202021%2020210511140414.pdf
