By Peter Suarez, Esq., President, Vitale, Suarez & Associates, P.A. · Miami Lakes, Florida
A Medicare claim reopening is not an appeal. It is a request that the decision-maker correct a decision that has already become binding, and the decision-maker is not required to say yes.
If you manage billing, compliance, or operations for a practice, clinic, laboratory, or facility, you may find a problem in a claim after the appeal deadlines have passed: a clerical error, a record that was not available when the contractor decided, or an overpayment you have identified yourself. This article explains who can ask for a reopening, how long you have, what counts as good cause, and when a pending appeal blocks the request.
In plain terms, a reopening is a corrective action to change a binding determination or decision that caused an overpayment or an underpayment, even if the decision was correct on the record when it was made. The rules are in 42 C.F.R. § 405.980 and the sections that follow. The article on the Medicare overpayment appeal process shows where reopening sits next to the five appeal levels.
Reopening Is Not an Appeal
The difference matters because the two tools have different clocks, different standards, and different results when they fail.
An appeal is a right. If you file on time and in the form the rule requires, the next level must act. A reopening is a corrective action that the adjudicator may take. The rule says whether to reopen is the adjudicator’s decision, that the decision is binding, and that it cannot be appealed (42 C.F.R. § 405.980(a)(5)). The section does not state that a party is entitled to a reopening. It only says who may reopen and when. By the time a provider decides to ask for a reopening, the shorter window may already have closed. If your policy says every adverse decision is reviewed for reopening but no one tracks the dates, the control exists on paper only.
That changes how you should use it. A reopening is a good tool for an error that is clear and easy to document. It is a poor substitute for an appeal you let lapse.
Who Can Reopen What
Each decision-maker can reopen its own work. A contractor may reopen initial determinations and redeterminations. A QIC may reopen reconsiderations. An ALJ or attorney adjudicator may reopen its own decision. The Council may reopen an ALJ or attorney adjudicator decision, or its own review decision (§ 405.980(a)(1)).
You, as a party, can ask. The time limits depend on what you are asking to reopen.
Initial Determinations and Redeterminations
A party can request reopening of an initial determination or a redetermination within one year of the determination, for any reason. A party can request it within four years for good cause. And a party can request it at any time if the determination is unfavorable in whole or in part and the request is only to correct a clerical error (§ 405.980(c)(1)-(3)).
A contractor has a slightly different list. It may reopen within one year for any reason, within four years for good cause, at any time if reliable evidence shows the determination was procured by fraud or similar fault, at any time to correct a clerical error in an unfavorable determination, and at any time to implement a coverage appeals decision (§ 405.980(b)).
Reconsiderations, ALJ Decisions, and Council Decisions
For these later decisions, a party can ask the QIC, the ALJ or attorney adjudicator, or the Council to reopen within 180 calendar days, for good cause (§ 405.980(e)). The adjudicator can reopen on its own within 180 calendar days for good cause, and at any time if the decision was procured by fraud or similar fault (§ 405.980(d)).
The one-year, four-year, and 180-day periods are different clocks. Write down which one applies to the decision you want to reopen before you do anything else.
What Counts as Good Cause
Good cause is defined narrowly. It exists in two situations (42 C.F.R. § 405.986).
- New and material evidence. The evidence is new and material, was not known or available when the decision was made, and could lead to a different outcome.
- An obvious mistake on the evidence already considered. The evidence that was before the decision-maker plainly shows that an obvious mistake was made.
Two limits follow. A change in legal interpretation or policy by CMS or the Social Security Administration does not, by itself, justify reopening a decision. And a request based on another payer’s mistake in making the primary payment does not qualify as good cause if Medicare processed the claim consistently with the information in its system or on the claim form (§ 405.986(b)-(c)).
This good-cause standard is not the same as the good-cause standard for a late appeal. The article on good cause for a late Medicare appeal covers the second standard, which asks why you did not file on time. The reopening standard asks what is new, or what was plainly wrong.
Clerical Errors Have Their Own Path
Clerical errors, including minor errors and omissions, go through the reopening process instead of a redetermination. The rule gives examples: math errors, data entry mistakes, and duplicate-claim denials, whether made by the party or by the contractor (§ 405.980(a)(3)). A party can request reopening to correct a clerical error in an unfavorable determination at any time.
If the contractor decides that the issue is not a clerical error, it must dismiss the request and explain your appeal rights, if the appeal deadline has not passed. Treat that as a reason to file the appeal request at the same time when the deadline is close, not as a second chance after the deadline.
Missing Documentation Is Treated as a Reopening
If a contractor denies a claim because requested documents were not provided during medical review, and you later ask for a redetermination, the contractor must treat your request as a reopening (§ 405.980(a)(2)). The effect is that a request that looks like an appeal may be handled under the reopening rules and their limits.
That is a good reason to answer every documentation request on time. A record you could have sent the first time is a record that will be examined for good cause later.
When a Pending Appeal Blocks Reopening
No adjudicator may reopen an issue on a claim while a valid appeal of that issue is pending. Reopening becomes available once all appeal rights for that issue are exhausted (§ 405.980(a)(4)).
That rule cuts both ways. If you have filed a valid appeal on an issue, you cannot use a reopening request to get a second route to the same result. And if you did not appeal and the deadline has passed, the reopening clocks may still be open when the appeal clocks are closed.
Reporting and Returning an Overpayment
A party may request a reopening to report and return an overpayment under 42 C.F.R. § 401.305 (§ 405.980(c)(4)). If you have identified an overpayment yourself, the reopening rule is one of the routes for dealing with it. The obligation to report and return an overpayment is a separate subject, and the article on the federal 60-day refund rule for overpayments covers it.
An unresolved overpayment can create a larger problem over time, and the article on how unresolved overpayments transition into False Claims Act liability explains why. Do not use a reopening request to delay a decision you have already made.
What Happens After a Reopening
When a determination or decision is reopened and revised, the contractor, QIC, ALJ, attorney adjudicator, or Council must send the revised decision to all parties to the original decision. If the revision fully or partly reverses the outcome and results in a payment to a provider or supplier, the Medicare contractor must issue a revised remittance advice. An unfavorable revised decision must explain the reasons for and basis of the reopening and revision and identify any right to appeal (42 C.F.R. § 405.982).
The revised decision is binding unless a party appeals it. The right to appeal follows the level of the revised decision: a revised initial determination can be appealed by a timely request for redetermination, a revised redetermination by a request for reconsideration, a revised reconsideration by a request for an ALJ hearing, and so on. Only the part of the earlier decision that the reopening changed can be appealed later (§ 405.984).
The rule also means that a reopening can change a decision in either direction, because it is a corrective action for an overpayment or an underpayment. Review the whole claim before you ask.
Does a Reopening Request Stop Recoupment?
The rules that stop recoupment name valid, timely requests for redetermination and reconsideration (42 C.F.R. § 405.379). This article did not find a rule that gives a reopening request the same effect. Do not assume that asking for a reopening pauses recovery, and do not let a reopening request stand in for an appeal filed on time. The article on Medicare appeal deadlines covers the dates that control recoupment.
How to Decide Whether to Request a Reopening
Step 1: identify the decision and its date
Write down which decision you want to change, the level that issued it, and the date. The clock depends on both.
Step 2: check whether an appeal is still open
If a valid appeal of the issue is pending, or the appeal deadline has not passed, the appeal is the tool. Compare the dates in the article on Medicare appeal deadlines before you choose.
Step 3: match the request to a ground
Decide whether you are asking for a reopening for any reason, for good cause, to correct a clerical error, or to report and return an overpayment, and write the ground in a single sentence.
Step 4: document the ground
For good cause, gather the new evidence and show why it was not known or available when the decision was made. For an obvious mistake, point to the evidence already in the record. For a clerical error, identify the error and the correction.
Step 5: submit to the right decision-maker
The decision-maker that issued the decision is the one that can reopen it. Follow the instructions in the notice, and keep proof of when the request was received.
Step 6: calendar what comes next
If the reopening is granted, the revised decision starts a new appeal clock for the changed part. If it is not, the decision cannot be appealed, so decide in advance what you will do.
Common Provider Mistakes With Reopening
Using Reopening as a Substitute for an Appeal
A reopening is discretionary and its denial cannot be appealed. A provider that lets an appeal deadline pass and then relies on reopening has traded a right for a request.
Assuming a Policy Change Is Good Cause
A change in CMS interpretation or policy does not, by itself, justify reopening. The ground has to be new and material evidence or an obvious mistake.
Missing the One-Year Window
The one-year period for any reason is the simplest ground and the easiest to lose. Calendar it from the date of the determination.
Treating a Documentation Failure as New Evidence
A record that was available when the contractor asked for it is not new. The rule that treats a later redetermination request as a reopening exists because of this problem.
Making Informal Explanations That Become Admissions
A casual comment such as “we found the order after the audit,” “we thought the contractor already had it,” or “the biller never checked that edit” can later be cited as evidence of a process failure. Calls to the contractor, emails to a reviewer, and cover letters are part of the record. Your written request is part of the evidentiary record.
Troubleshooting: When the Reopening Does Not Go as Planned
If the contractor declines to reopen, the decision is binding and cannot be appealed. Read the response for the reason, and decide whether any other route remains. If an appeal deadline has not passed, that route may still be open.
If the contractor treats your request as a clerical error and dismisses it, read the dismissal for any appeal rights it identifies and calendar them.
If the reopening is granted and the revised decision is unfavorable, the notice must explain the reasons and identify any right to appeal. Calendar the appeal deadline from the date you receive the revised decision.
Expected Outcome: A Request That Can Be Decided
A well-prepared reopening request names the decision, the ground, and the evidence on a single page. It does not guarantee a favorable result. It gives the decision-maker an easy path to say yes and makes the reason for any refusal visible.
30-Day, 90-Day, and Ongoing Priorities
- Next 30 days. List every decision you may want to correct, with its date and level. Mark which clocks are still open.
- Next 90 days. Build a short procedure for clerical errors so that corrections are requested promptly. Assign one owner for the reopening calendar.
- Ongoing. Review closed claims for patterns. If you identify an overpayment, decide how to report and return it before the clocks run.
When Counsel Should Be Involved
Some reopening requests justify legal review before anything is sent. If the request would admit an overpayment, if the decision rests on a statistical sample, if an appeal is pending on a related issue, or if the matter arrived with a payment suspension or a records request, the wording of the request can shape the rest of the case. If counsel directs the review, communications about legal exposure may be better protected under the attorney-client privilege than informal email among billing and operations staff, where the privilege applies. These matters are described on the pages for Medicare and Medicaid overpayments and defense investigations, and the practice areas page lists the rest.
These rules are federal and apply wherever the demand originates.
The practical decision rule is simple: if an appeal is still open, appeal. If it is closed and the ground is new evidence or an obvious mistake, document the ground before you ask. If you cannot name the ground in one sentence, the request is not ready.
Frequently Asked Questions
What is a Medicare claim reopening?
It is a corrective action to change a binding determination or decision that caused an overpayment or underpayment, even if the decision was correct when made (42 C.F.R. § 405.980(a)(1)).
How long do you have to request a reopening?
For an initial determination or redetermination, one year for any reason or four years for good cause, and at any time to correct a clerical error in an unfavorable determination. For a reconsideration, ALJ decision, or Council decision, 180 calendar days for good cause (42 C.F.R. § 405.980(c), (e)).
What is good cause for a reopening?
New and material evidence that was not known or available when the decision was made and could lead to a different outcome, or evidence already considered that plainly shows an obvious mistake (42 C.F.R. § 405.986(a)). A change in CMS policy or interpretation does not, by itself, qualify.
Can you appeal a denial of a request to reopen?
No. The decision whether to reopen is the adjudicator’s, it is binding, and it cannot be appealed (42 C.F.R. § 405.980(a)(5)).
Can you reopen a claim while an appeal is pending?
No. No adjudicator may reopen an issue on a claim while a valid appeal of that issue is pending. Reopening becomes available once the appeal rights for that issue are exhausted (42 C.F.R. § 405.980(a)(4)).
Does a reopening request stop recoupment?
The rules that stop recoupment name valid, timely requests for redetermination and reconsideration (42 C.F.R. § 405.379). This article found no rule that gives a reopening request the same effect, so do not assume it does.
About the author. Peter Suarez is the President of Vitale, Suarez & Associates, P.A. in Miami Lakes, Florida, the firm founded in 1982 as The Health Law Offices of Anthony C. Vitale, P.A. He has worked in healthcare law at the firm for 38 years, first as a Florida Registered Paralegal and Office Administrator, and was admitted to The Florida Bar in 2025 after earning his J.D. from Florida International University College of Law. He also holds a B.A. in Business Administration, magna cum laude, from Florida International University. He played an integral role in a three-week federal trial involving a physician charged with conspiracy to unlawfully dispense and distribute controlled substances. He is a member of the American Health Law Association, the American Bar Association, the Dade County Bar Association, and the Cuban American Bar Association. Learn more about the firm.
This article is for general information purposes only and should not be taken as legal advice for any individual case or situation. Reading it, or corresponding with us through this site, is not intended to create and does not create an attorney-client relationship. Federal and Florida healthcare regulations change frequently, and how any rule applies depends on the specific facts of your arrangement, your payor contracts, and your jurisdiction. Vitale, Suarez & Associates, P.A. is based in Miami Lakes, Florida and represents clients in Florida. If you have received an audit notice, records request, subpoena, civil investigative demand, or overpayment demand, speak with a licensed attorney before you respond.
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