The first two levels of the Original Medicare fee-for-service claims appeal process can look similar: the provider submits a written challenge, a reviewer examines records, and a determination follows. But redetermination by the Medicare Administrative Contractor (MAC) and reconsideration by a Qualified Independent Contractor (QIC) are separate review stages with different deadlines and important evidence rules. A provider that treats reconsideration as an opportunity to assemble the clinical file for the first time may face avoidable restrictions later. Related representation is described in BOLO’s healthcare audits and investigations practice.
Start by establishing what is actually appealable
Read the initial claim determination, remittance advice, denial codes and the notice’s appeal instructions. A routine Additional Documentation Request is not necessarily an initial claim determination. Likewise, a Medicare payment-suspension rebuttal under 42 C.F.R. Part 405 Subpart C is not automatically a claims appeal under Subpart I. Identify the party entitled to appeal, the beneficiary and claim numbers, the services and dates at issue, and whether the dispute is about coverage, payment amount, coding, documentation or another determination. A broad objection to an audit finding is not a substitute for filing the legally required appeal.
Original Medicare Part A and B appeal rights generally arise under Section 1869 of the Social Security Act and 42 C.F.R. Part 405 Subpart I. Other programs, payment adjustments, and contracts may involve different procedures. Counsel should confirm the precise jurisdiction and the notice before applying the fee-for-service framework.
Redetermination: preserve the complete factual case early
CMS states that a party generally has 120 days from receipt of an initial claim determination to request MAC redetermination. Receipt is ordinarily presumed five calendar days after the notice date absent contrary evidence; applicable rules and good-cause provisions may affect a particular calculation. The request should identify the claim and service, explain each issue disputed, and include the evidence supporting the requested reversal. The MAC staff conducting redetermination must be different from those who made the initial claim decision.
Review the coverage requirements in effect for the date of service. Identify relevant national coverage determinations, local coverage determinations, billing articles, regulations and claims-processing instructions. Then crosswalk each denial to the actual contemporaneous record. Where the contractor alleges an absent order, distinguish whether an authorized order existed but was not sent from whether the record genuinely lacks the required evidence. When a medical-necessity denial concerns a course of care, build a chronological explanation of symptoms, findings, risk factors, treatment decisions and changes in condition.
QIC reconsideration: independent review with evidence consequences
A party dissatisfied with redetermination ordinarily has 180 days after receipt of the redetermination decision to request QIC reconsideration, under the CMS second-level appeal guidance. The QIC independently reviews the record and disputed payment issues. The reconsideration is not simply the MAC affirming its own prior decision. When medical necessity under Social Security Act § 1862(a)(1)(A) is at issue, 42 C.F.R. § 405.968 addresses clinical review by appropriate health professionals.
The evidence timing rule in 42 C.F.R. § 405.966 deserves attention. A provider or supplier requesting reconsideration should submit relevant evidence and allegations, including missing documents identified in the redetermination notice. Absent good cause, failure to introduce evidence within the stated stages can restrict its later consideration. Exceptions exist, including different treatment of certain unrepresented beneficiaries and state Medicaid agencies. It is therefore unsafe to promise that a provider can simply save important chart material for an eventual administrative law judge hearing.
What a persuasive claim-level evidence matrix includes
- The exact denial language, claim identifier, service date, item or procedure and payment amount
- Date-specific governing rule: statutory condition, regulation, NCD, LCD or applicable billing guidance
- Each required criterion next to a precise contemporaneous chart citation
- The ordering, treating, rendering and billing professionals’ roles, where relevant
- Missing or disputed evidence identified candidly rather than reconstructed retroactively
- The requested relief, supporting explanation and exhibit page references
An appeal should distinguish a factual challenge from a policy dispute. If a reviewer says a treatment was not furnished, the evidence is the proof of what occurred. If a reviewer agrees care occurred but says coverage criteria were not met, the appeal must engage that criterion. If the claim was paid with the wrong code or unit, an accurate transaction and coding reconciliation may matter more than narrative medicine. Presenting every record without explaining which rule each item satisfies can make a strong clinical file difficult to evaluate.
Do not overlook statistical extrapolation
When a contractor projects an overpayment from sampled claims, two analyses may run in parallel. First, challenge every erroneous sampled denial with service-specific evidence. Second, consider whether the sampling universe, methodology, units and calculation satisfy the applicable statutory and regulatory rules. A provider need not select one issue to the exclusion of the other. However, the notice and appeal posture determine which questions can be raised and when. See Medicare audit extrapolation.
The response must preserve proof of filing
Keep copies of the original denial and every appellate notice. Record date of receipt, submission method, tracking number, portal confirmation, attachments and any contractor request for additional materials. If submitting supplemental evidence after a QIC reconsideration request, § 405.966(b) addresses effects on the decision timetable. Written logs can prevent confusion when dozens of claims have distinct determinations and timelines. A complete appeal file should make it possible to establish not only that materials were created, but what actually was transmitted and received.
Primary authorities and related BOLO guidance
- CMS: First-Level Redetermination
- CMS: Second-Level Reconsideration
- 42 C.F.R. § 405.966 (reconsideration evidence)
- 42 C.F.R. § 405.968 (QIC review)
- Medicare ADR: complete submission files and suspension versus overpayment
Editorial update: Brian M. O’Loughlin, JD, RN | Substantive revision October 24, 2026. This original legal analysis summarizes cited rules without assuming any particular claim’s outcome.
Facing a Medicare appeal deadline? BOLO Health Law can assess the notice and coverage rule, organize claim-level evidence and distinguish appeals from separate suspension or recoupment procedures. Request counsel or call 609-200-6677. Send no patient information through the public inquiry.
Attorney advertising. Educational information, not individualized legal advice. Filing rights, evidence exceptions and deadlines depend on the specific notice and governing law. An inquiry does not create representation or extend an appeal window. See our editorial standards.