Credentialing & Enrollment

Missed Your Medicare Revalidation Deadline? What Happens, What to File, and When Billing Resumes

Payment hold, stay of enrollment, deactivation and revocation are four different notices with four different fixes. Find yours in the table, then file the right thing today.

If you miss your Medicare revalidation due date, your Medicare contractor first stops paying (CMS calls it a hold on reimbursement; First Coast imposes a stay of enrollment with 30 days to file while claims reject) and then deactivates your billing privileges, retroactive to the due date. To come back you file a complete enrollment application in PECOS, and billing resumes only from the date the contractor receives the application it later approves: Medicare does not pay for services furnished in the gap. CMS grants no extensions, so the cheapest day to file is today.

This page is for physician, practitioner and group enrollments in Original Medicare. If your revalidation is not due yet, the five-year cycle and every other recurring clock are on our recredentialing and maintenance page.

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Last updated October 23, 2026. Reviewed by Jacob Greenberg, ClaimCarePro.

Find your situation: what Medicare does, what you file, where billing stands

Read the letter, find the row, act on that row. Rules from CMS, 42 CFR 424 and the MACs, all read October 23, 2026.

Missed Medicare revalidation situations, the contractor action, the filing and billing status
Your situation	What CMS or the MAC does	What you file	Where billing stands
Notice received, due date less than 60 days away	Your MAC has asked you to revalidate. You have 60 calendar days from the notice to submit a complete application (42 CFR 424.515(a)), and CMS grants no extensions	Revalidation in PECOS for the enrollment named in the notice (CMS-855I individual; CMS-855B group), with signatures and any CMS-588 EFT update	Normal. Nothing is held yet
Due date passed, no letter about it yet	CMS warns of a hold on reimbursement or deactivation (CMS). Noridian deactivates typically 60 to 75 days after the due date (Noridian)	The same revalidation, filed today. Do not wait for the next letter	Still enrolled, but expect claims to start rejecting at any point
Payment hold or stay of enrollment notice	First Coast imposes a stay of enrollment and gives 30 days to submit; claims reject during it (First Coast). A stay lasts up to 60 days (42 CFR 424.541)	The revalidation, inside the window the notice states. A 15-day rebuttal exists only if the stay itself is wrong	Claims for dates of service in the stay reject; they can be paid if you are back in compliance before the stay ends
Deactivated	Billing privileges stopped, retroactive to the date of non-compliance, which First Coast sets at the revalidation due date (42 CFR 424.540(d); First Coast)	A complete enrollment application to reactivate (CMS). If the deactivation is wrong, a rebuttal within 15 calendar days of the letter (42 CFR 424.546)	No payment for services while deactivated. Billing resumes from the date the MAC received the application it later approves
Revoked	Billing privileges and any provider agreement terminated, generally 30 days after the notice is mailed, with a re-enrollment bar of 1 to 10 years (42 CFR 424.535)	Appeal rights follow 42 CFR part 498; get counsel. After any bar, a new enrollment as a new provider	Stopped from the revocation effective date

The second row is the one practices sit in without knowing it. Nothing has arrived, the due date has passed, and claims are still paying, so it feels safe. It is the last point at which filing costs you nothing. Every day after deactivation becomes a day of services Medicare will not pay for.

Payment hold, deactivation and revocation are three different things

Three notices that all look like “Medicare stopped paying”, with three different fixes.

A payment hold or stay of enrollment means you are still enrolled but Medicare is not paying for now. The federal rule calls it a stay: a pause of up to 60 days for a problem you can fix by filing an enrollment application, during which claims for those dates of service are rejected, and can be paid if you are back in compliance before the stay ends (42 CFR 424.541). First Coast, the Medicare contractor for Florida, uses a stay as the first step after a missed revalidation and gives 30 days to submit (First Coast revalidation overview). The fix is the revalidation itself.

Deactivation means your billing privileges were stopped but “can be restored upon the submission of updated information” (42 CFR 424.502). Not answering a revalidation request completely within 90 days of CMS asking is a listed reason (42 CFR 424.540(a)(3)), and so is submitting no Medicare claims for six consecutive calendar months (424.540(a)(1)), which catches a part-time provider who has nothing to do with revalidation. Deactivation does not end your participation agreement (424.540(c)). The fix is a reactivation application.

Revocation means your billing privileges are terminated (42 CFR 424.502). Any provider agreement ends with it, and a re-enrollment bar of one to ten years usually follows (42 CFR 424.535). One detail matters for this page: when the revocation is only for failing to respond on time to a revalidation request, the rule says the bar does not apply (424.535(c)(1)(ii)). Revocation appeals follow 42 CFR part 498. That is legal work with its own deadlines; get counsel, and do not treat a revocation letter like a deactivation.

What happens if you miss your Medicare revalidation: the timeline

From the notice to the new effective date, as CMS and the contractors describe it.

Seven months out: CMS posts your due date on the Medicare Revalidation List. Revalidations filed more than seven months early without a notice are returned (CMS revalidations).
Three to four months out: your contractor sends the revalidation notice by email or U.S. mail. Inside three months of the due date, CMS tells you to revalidate even if no notice arrived.
The notice date: 60 calendar days to submit a complete application starts (42 CFR 424.515(a)).
The due date passes: at First Coast, a stay of enrollment with 30 days to file while claims reject (First Coast). Noridian says it deactivates typically 60 to 75 days after the due date (Noridian). Each contractor runs its own steps, so read the letter you actually got.
Deactivation: effective retroactively to the date you fell out of compliance (42 CFR 424.540(d)(1)(ii)), which First Coast sets at the revalidation due date. A 15-day rebuttal window opens if the letter offers one.
Reactivation application received: that receipt date becomes your new effective date if the application is approved (424.540(d)(2)).
Approval: billing resumes from the new effective date. The days between deactivation and receipt are the gap.

When billing resumes after reactivation, and the gap you cannot bill

The single most expensive fact on this page.

Billing resumes on the date your contractor received the reactivation application it later approved, not on the date you were deactivated and not on the approval date. That is the current text of 42 CFR 424.540(d)(2), and 424.540(e) adds that a deactivated provider may not be paid for services furnished while deactivated. First Coast spells out the result for revalidation deactivations: “a gap in coverage from the date of deactivation to the receipt date” of a full, new revalidation application (First Coast effective dates). Because the deactivation is backdated to the due date, a practice that files six weeks late has six weeks of services in that gap.

Do not plan on the 30-day retrospective billing rule closing it. That rule (42 CFR 424.521) works off initial enrollment effective dates; the reactivation date comes from 424.540(d)(2), and neither the rule nor First Coast's reactivation guidance offers a look-back. We do not promise, and nobody honest can promise, payment for the gap.

What to do with claims dated inside the gap. Hold them in one worklist, by provider and date of service, rather than resubmitting them in a batch that will reject again. Once the approval letter arrives, release everything dated on or after the new effective date. Claims rejected during a stay that ended in compliance can be resubmitted inside timely filing, which for Medicare is one calendar year from the date of service (our timely filing limits guide). How the visits that fall in the gap are handled with patients is a compliance question for your billing lead, not something to decide claim by claim at the front desk.

How to reactivate Medicare billing privileges, step by step

The order matters: the letter, the record, the decision, then the application.

Steps to reactivate Medicare billing privileges after a missed revalidation
Step	What it involves
1. Read the whole letter	Which action it is (request, stay, deactivation, revocation), whose enrollment (the individual NPI or the group), the PTAN, the reason, the effective date, and whether it offers a rebuttal
2. Check the record yourself	PECOS for the enrollment and any application already in progress; the Medicare Revalidation List for the due date
3. Decide: rebuttal or application	Rebut only if the facts in the letter are wrong (you did file, on time). Otherwise go straight to the application; a rebuttal does not pause the clock
4. File the complete application	PECOS, the CMS-855I or CMS-855B named in the letter, reassignments (CMS-855I section 4F) and the CMS-588 if banking changed. Every signature collected the same day
5. Answer development fast	A MAC request for missing information has its own deadline; incomplete information within 90 days of a CMS request is itself a deactivation reason (42 CFR 424.540(a)(3))
6. Keep the approval letter	It carries the new effective date. Release held claims dated on or after it; work the gap claims separately
7. Fix the address that missed the notice	Correspondence address, special payments address and email in PECOS, then a calendar entry for the next due date

What to submit. A complete Medicare enrollment application for the enrollment that was deactivated, online in PECOS or on the paper CMS-855. The rule lets CMS accept a recertification that the record on file is correct, but also lets it require a complete application for any reason (42 CFR 424.540(b)), and CMS's own revalidation page says to resubmit a complete application (CMS). Noridian processes a reactivation “as if it were a new enrollment” (Noridian). Individual practitioners file the CMS-855I; a group files the CMS-855B; a provider who reassigns benefits to a group does it in CMS-855I section 4F, because the CMS-855R is discontinued. Form-by-form detail is on our Medicare provider enrollment guide.

The application fee. CMS charges a fee on initial enrollment, revalidation and new practice locations for institutional providers only (42 CFR 424.514): $750 for applications submitted in calendar year 2026 (Federal Register, Dec. 3, 2025). The definition of institutional provider covers the CMS-855A, CMS-855S and CMS-855B “not including physician and nonphysician practitioner organizations” (42 CFR 424.502). So a physician or practitioner group filing an 855B pays no CMS fee; an 855B supplier such as an independent diagnostic testing facility does. If you are not sure which you are, ask your contractor before filing, because a missing fee stops the application.

The rebuttal, if the deactivation is wrong. If you did revalidate on time and the contractor missed it, a rebuttal must be a signed, dated letter received within 15 calendar days of the notice, stating what you dispute and attaching the proof (42 CFR 424.546). CMS does not have to hold the deactivation while it reviews, the decision is not appealable, and one rebuttal is allowed per deactivation. First Coast takes rebuttals with its coversheet by fax at 904-361-0737, by email to FCSOJNPERebuttals@fcso.com, or by mail to P.O. Box 3409, Mechanicsburg, PA 17055-1849, decides within 30 calendar days, and after an unfavorable decision says to revalidate or reactivate in PECOS or on paper (First Coast rebuttals). Its line for enrollment process questions is 888-845-8614. If the facts are not in your favor, skip the rebuttal and file the application the same day: the gap grows while you argue.

How long Medicare reactivation takes

Only what the contractors publish.

First Coast publishes no separate processing standard for reactivations; its standards for internet PECOS revalidations are 80% within 15 calendar days and all within 50 when no site visit, development or fingerprinting is needed, and 80% within 50 and all within 85 when they are. Its PECOS standard for initial enrollments is 95% within 15 days and all within 50 without development, 95% within 50 and all within 85 with it. Paper takes longer: 30 and 65 days for revalidations without development (First Coast processing timeframes, page dated February 18, 2026). Because Noridian treats a reactivation as a new enrollment, the initial-enrollment line is the closer guide. The clock stops for fingerprints, for signatures still missing on a PECOS application, and for a development request until you answer it, which is why an incomplete file is slower than a late one.

Processing time does not change your effective date. That was fixed the day the contractor received the application; processing decides only when you see the approval and can release held claims.

How to read the revalidation notice, and why the practice never saw it

Most missed revalidations are an address problem, not a deadline problem.

The notice goes to the addresses and email on your Medicare enrollment record, not to whoever is running the practice today. Noridian, for example, mails one letter to the special payments address and one to the correspondence address on file, and sends reminder emails about four and one and a half months before the due date when a correspondence email is on file (Noridian revalidation). When that address is the old office, a former billing company, or the email of an office manager who left, the notice arrives on time and nobody reads it.

In our casework, credentialing files stall on bad data from the providers far more than on Medicare, and this is the purest case of it: one stale line in PECOS. Changes to enrollment information other than ownership, adverse legal actions and practice locations must be reported within 90 days (42 CFR 424.516(d)), and failing to report a change is its own deactivation reason. How to report changes, and who signs, is on our add a provider to your group page; how PECOS records and logins work is on PECOS explained.

When you have the letter, find five things: the action (a request, a stay, a deactivation or a revocation), the enrollment it concerns (the individual practitioner or the group, by NPI and PTAN), the date it counts from, the deadline it sets, and whether it offers a rebuttal. A group can be current while one reassigned practitioner is not, so match the letter to the right record before anyone files.

Where to find your revalidation due date, and how to check your status

The list, PECOS, and what TBD means.

Your due date is on the Medicare Revalidation List at data.cms.gov, searchable by NPI, and CMS posts it seven months ahead. If the list shows TBD, no due date has been set for you yet and you should not file: an unsolicited revalidation is returned (Medicare Revalidation List; Noridian; CMS). TBD is not a clean bill of health, though: the six-month no-claims rule and change reporting still apply.

The list shows a date, not whether your application was received or approved. For that, check the application in PECOS and with your contractor; how to do it for Medicare and every major payer is on our check credentialing status guide.

If you are gathering documents for the application, the full checklist we use is on what we need to start.

Railroad Medicare and Medicaid: one clock follows, one runs separately

A Medicare reactivation fixes one of the two.

Railroad Medicare follows your local MAC. Palmetto GBA, the Railroad Medicare contractor, does not run its own revalidation; your Railroad PTAN status mirrors your MAC enrollment, so a deactivation for a missed revalidation carries over and comes back with the reactivation (Palmetto provider enrollment FAQs). Detail is on our Railroad Medicare enrollment page.

Medicaid runs on its own clock. Each state Medicaid agency revalidates its providers at least every five years (42 CFR 455.414); Florida's AHCA renews enrollment every five years from the effective date (AHCA). A Medicare reactivation does not touch it, and a lapsed Medicaid enrollment is not saved by a Medicaid managed-care contract. State by state, see our Medicaid provider enrollment guide. Commercial plans recredential on their own cycles again; those are on the payer credentialing hub.

How ClaimCarePro handles a missed revalidation

The application, the follow-up, and the calendar so it does not happen twice.

When a revalidation has slipped, we start with the letter and the PECOS record, confirm which enrollment is affected, rebuild the application from current documents instead of the stale record, collect every signature, and file. Then we follow up with the contractor every week, logging the representative, the date and the reference number, and answer development requests the day they arrive. We also correct the correspondence address and email that missed the notice.

Revalidation or reactivation application: $250 per payer application per provider, the same as an initial application.
Maintenance: $99 per provider per year. It tracks revalidation due dates and expirables, re-attests CAQH and pushes address and tax-ID updates; it does not include the applications themselves.

What we do not do: promise a reactivation, promise payment for the gap, or advise on a revocation appeal. Full pricing, including the $1,750 new-practice bundle, is on provider credentialing services; how credentialing and enrollment fit together is on what is provider credentialing.

Missed Medicare revalidation questions, answered

What happens if I miss my Medicare revalidation?

Payment stops first, then billing privileges are deactivated. CMS says a late revalidation can bring a hold on reimbursement or deactivation and grants no extensions. First Coast imposes a stay of enrollment with 30 days to file while claims reject, then deactivates retroactive to the due date. Medicare does not pay for services furnished while deactivated (42 CFR 424.540(e)).

How do I reactivate my Medicare billing privileges?

File a complete Medicare enrollment application, in PECOS or on paper, for the enrollment that was deactivated: the CMS-855I for an individual practitioner and the CMS-855B for a group. CMS can accept a recertification of the record on file instead, but its revalidation page and First Coast both say to expect a complete application (42 CFR 424.540(b)). Then answer every development request until the approval letter arrives.

How long does Medicare reactivation take?

First Coast publishes no separate reactivation standard; its PECOS standards are 80% of revalidations in 15 calendar days without development (all within 50) and 95% of initial applications in 15 days (all within 50), longer with a site visit, development or fingerprints. Noridian processes a reactivation as if it were a new enrollment. These are processing standards, not promises.

Can I bill Medicare while reactivating?

You can submit, but you should not expect payment for services in the gap. Under 42 CFR 424.540(d)(2) the reactivation is effective the date your MAC received the reactivation application it later approved, and 424.540(e) bars payment for services furnished while deactivated. Claims dated on or after the new effective date are billable once the approval posts.

What is the difference between deactivation and revocation?

Deactivation stops billing privileges but they can be restored by submitting updated information; revocation terminates them (42 CFR 424.502). A revocation also terminates any provider agreement and usually carries a re-enrollment bar of 1 to 10 years. A revocation imposed only because a revalidation request went unanswered carries no bar (424.535(c)(1)(ii)).

Where do I find my Medicare revalidation due date?

On the Medicare Revalidation List at data.cms.gov, searchable by NPI, and in PECOS. CMS posts due dates seven months ahead. "TBD" means no due date has been set for you yet; do not file a revalidation then, because unsolicited applications are returned.

Can I get an extension on Medicare revalidation?

No. CMS states that it does not grant extensions and that there are no exemptions. Once a MAC sends the request, 42 CFR 424.515(a) gives 60 calendar days to submit a complete application.

Can I dispute a Medicare deactivation?

Yes, with a rebuttal, if the notice offers one. It must be a signed, dated letter received within 15 calendar days of the notice, stating the facts you dispute and attaching your documentation (42 CFR 424.546). CMS does not have to delay the deactivation while it reviews, and the decision is not appealable. First Coast takes rebuttals by fax, email or mail.

Does a missed Medicare revalidation affect Railroad Medicare or Medicaid?

Railroad Medicare, yes: Palmetto does not run its own revalidation, and its status follows your local MAC, so a deactivation there carries over. Medicaid, no: it is a separate enrollment with its own revalidation at least every five years, set by each state (42 CFR 455.414), and a Medicare reactivation does not renew it.

How much does ClaimCarePro charge for a Medicare reactivation?

A revalidation or reactivation application is $250 per payer application per provider, with weekly follow-up until the MAC decides. Maintenance at $99 per provider per year tracks revalidation due dates and expirables so the next one is on a calendar; it does not include the applications.

Revalidation and reactivation applications are $250 per payer application per provider; maintenance is $99 per provider per year.

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Last updated October 23, 2026. Reviewed by Jacob Greenberg, ClaimCarePro.

Sources

All read October 23, 2026.

CMS: Revalidations (page modified July 29, 2025)
CMS: Medicare Revalidation List
42 CFR 424.502 (definitions), 424.514 (application fee), 424.515 (revalidation), 424.516 (reporting changes), 424.521 (retrospective billing), 424.535 (revocation), 424.540 (deactivation and reactivation), 424.541 (stay of enrollment), 424.546 (deactivation rebuttals), 455.414 (Medicaid revalidation) and part 498 (appeals)
Federal Register, December 3, 2025: CY 2026 application fee ($750)
First Coast: Revalidation overview (August 24, 2026)
First Coast: Determining your Medicare effective date (February 18, 2026)
First Coast: Submitting a provider enrollment rebuttal (June 9, 2025)
First Coast: CMS-855 processing timeframes (February 18, 2026)
Noridian JF: Revalidation (updated May 1, 2026)
Palmetto GBA Railroad Medicare: Provider enrollment FAQs
Florida AHCA: Provider enrollment readiness