Wound Care Redetermination Letter: Level 1 Medicare Appeal

A redetermination is the first level of the Medicare appeal process. When your wound care claim is denied -- whether through a MAC audit, pre-payment review, or standard claims processing -- the redetermination is your first opportunity to present additional evidence and argument to reverse the denial.

The good news: redetermination requests are reviewed by a different person at the MAC than the one who made the initial denial decision. You're getting fresh eyes. The challenge: if your redetermination fails, the next level (QIC reconsideration) has a significantly higher evidence bar. Getting the redetermination right matters.

For the broader denial prevention framework that reduces how often you end up here, see Wound Care Denial Prevention Strategy.

Deadlines and Filing Requirements

Filing deadline. You have 120 calendar days from the date of the Medicare Remittance Advice (RA) showing the denial. Not from the date you received it -- from the date printed on the RA. Don't wait. File within 30 days to preserve your options and maintain cash flow momentum.

Where to file. Submit the redetermination request to the MAC that processed the original claim. The RA identifies the MAC and includes the mailing address for appeals. Some MACs accept electronic redetermination requests through their provider portals -- check your MAC's website.

Form. Use CMS Form 20027 (Medicare Redetermination Request Form) or submit a written request that includes all required elements. A written letter with supporting documentation is typically stronger than a form submission alone, because it gives you space to present your clinical argument.

Amount in controversy. There is no minimum amount for a Level 1 redetermination. You can appeal any denied amount.

Letter Structure and Required Elements

Your redetermination letter should include these elements in this order.

Header Block

Include at the top of your letter:

Beneficiary name and Medicare Beneficiary Identifier (MBI)
Provider name, NPI, and Tax ID
Claim number and date(s) of service
The denial reason code(s) from the RA
A clear statement: "This letter constitutes a request for redetermination under 42 CFR 405.940"

Statement of the Issue

In one to two paragraphs, state what was denied and why you believe the denial was incorrect. Be specific and factual.

Example: "Claim [number] for date of service [date] was denied under reason code CO-50 (not deemed medically necessary). The initial review determined that documentation did not establish medical necessity for CPT 15271 (skin substitute application, trunk/extremities, first 25 sq cm). We respectfully request redetermination based on the enclosed documentation, which demonstrates that the service met all coverage criteria under LCD [L-number] and was medically necessary for the treatment of [wound etiology]."

Do not argue that the denial was unfair. Do not reference other claims or other patients. Address this specific denial with this specific evidence.

Clinical Argument

This is the core of your redetermination. Walk through the LCD criteria point by point and show how your documentation meets each requirement.

Wound etiology and diagnosis. "The patient presented with a [wound type] of the [location], classified as [staging/classification]. The wound etiology was established by [clinical findings, vascular studies, lab results] as documented on [date]."

Conservative treatment history. "Conservative wound management was initiated on [date] and continued through [date], a period of [X] weeks. Treatment included [specific interventions]. Despite consistent conservative management, the wound [failed to reduce in area by >30% / demonstrated signs of deterioration / remained static], as documented by serial wound measurements on [dates]."

Medical necessity for the billed service. "Based on the failure of conservative treatment and the clinical characteristics of the wound bed (adequate blood supply confirmed by [ABI/vascular study], wound bed free of necrotic tissue following debridement on [date], absence of uncontrolled infection), application of [product name] was determined to be medically necessary in accordance with LCD [L-number], Section [specific section]."

Wound measurements supporting the billed code. "Wound measurements on the date of service: [L] cm x [W] cm x [D] cm, total area [X] sq cm. The billed CPT code [code] covers [coverage range], consistent with the documented wound area."

Documentation Index

List every document you're enclosing:

Clinical note(s) for the denied date(s) of service
Clinical notes from prior visits demonstrating conservative treatment timeline
Wound photographs from relevant dates
Wound measurement log showing wound trajectory
Vascular assessment results (if applicable)
Orders signed by the treating or supervising physician
Applicable LCD sections with relevant criteria highlighted

Closing

"We respectfully request that this claim be reconsidered based on the enclosed clinical documentation, which demonstrates that the services provided met the medical necessity criteria established by [LCD number]. We are available to provide any additional documentation the reviewer may require."

Documentation That Strengthens Your Case

The redetermination reviewer is looking for evidence that wasn't present -- or wasn't clearly presented -- in the initial review. This is your chance to fill gaps and connect dots.

Wound measurement progression table. Create a simple table showing wound dimensions across visits. Date, L x W x D, total area, and percent change from baseline. This tells the wound trajectory story at a glance and directly supports medical necessity for continued treatment.

Annotated LCD crosswalk. Take the applicable LCD criteria and annotate each element with the specific documentation that satisfies it. "LCD requires documentation of wound etiology -- see clinical note dated [date], paragraph 2." This makes the reviewer's job easy and demonstrates that you've done the compliance work.

Wound photographs with measurement markers. If your documentation includes photos, ensure they show the wound ruler or measurement reference. Photos without scale are less useful than photos with documented dimensions.

Peer-reviewed clinical literature. If the denial suggests that the treatment approach was not medically appropriate, include relevant peer-reviewed literature supporting the clinical decision. This is supplementary -- not a substitute for LCD-based documentation -- but it adds weight to a borderline case.

After Submission

The MAC has 60 days from receipt of your redetermination request to issue a decision. In practice, responses often arrive within 30-45 days.

If the redetermination is favorable: The claim is reprocessed and payment is issued. No further action needed.

If the redetermination is unfavorable: You can escalate to a Level 2 appeal -- a Qualified Independent Contractor (QIC) reconsideration. The QIC is an independent organization, not affiliated with the MAC. The evidence bar is higher, but you're getting a truly independent review. The filing deadline for QIC reconsideration is 180 days from the redetermination decision. See Level 2 QIC Reconsideration for guidance on that process.

Track everything. Log the submission date, method (certified mail receipt number or electronic confirmation), and the 60-day expected response date. If you don't receive a decision within 60 days, contact the MAC's appeals department to confirm receipt and status.

Key Takeaways

File the redetermination within 120 days of the initial unfavorable determination -- this deadline is absolute and missing it forfeits the appeal
Structure the letter with clear identification, specific denial reason rebuttal, and a point-by-point connection between your documentation and the LCD criteria
Include a wound measurement progression table, annotated LCD crosswalk, and wound photographs with measurement markers to make the reviewer's job easy
If the redetermination is unfavorable, escalate to Level 2 QIC reconsideration within 180 days for an independent review by an organization not affiliated with the MAC