An Additional Documentation Request from a wound care provider's Medicare Administrative Contractor starts a fixed clock, not a suggestion. Once the MAC selects a claim for prepayment or post-payment medical review, the provider has 45 calendar days from the date on the request to submit the supporting record, and the clock runs from the letter's date, not the date the office opens the mail. A wound care chart that arrives late, incomplete, or without a legible signature is treated the same way as a chart that never arrives: the claim is denied without a reviewer ever reaching the clinical merits.
The 45-Day Response Clock
The deadline applies to both review types a wound care practice is likely to see. 42 CFR Section 405.903 governs the 45-day window for prepayment review, and 42 CFR Section 405.929 sets the same window for post-payment review. Under 42 CFR Section 405.930, a MAC that receives nothing, or receives the record after the window closes, denies the claim for lack of documentation, a determination that stands on different footing than a denial reached on the clinical merits. Contractors may accept a late submission for good cause, such as a natural disaster or a documented business closure, but the extension request has to reach the MAC before the 45 days run out, not after.
Assembling the Wound Care Chart
MAC reviewers evaluating a wound care or debridement claim work from published local coverage determination documentation lists, and the elements are specific. The record needs an operative or procedure note identifying the anatomical location treated, the instruments used, the type of tissue removed, and the depth and area of the wound. Wound location, size, depth, and stage must be identified by description, drawing, or photograph, along with tissue involvement, undermining, and any evidence of infection or reduced circulation. For a prolonged debridement course, particularly one exceeding five extensive debridements on the same wound, photographic documentation before or after the procedure is the standard reviewers expect. A skin substitute claim carries its own application-specific documentation on top of the underlying wound assessment, and a chart missing any one of these elements gives the reviewer grounds to deny on medical necessity even when the clinical care itself was appropriate.
Signature and Authentication Requirements
Every entry in the submitted record needs a legible identifier for the person who provided or ordered the service, whether the signature is handwritten, electronic, or a compliant signature stamp. An illegible signature does not automatically sink the claim, but it has to be resolved before submission. CMS signature guidance allows a provider to support an illegible or missing signature with a signature log or an attestation statement identifying the author, and that log has to accompany the record in the same ADR response, not arrive afterward as a supplemental submission.
A missing record and a record with an unresolved signature receive the identical denial. The reviewer never reaches whether the clinical care was medically necessary.
Submission Mechanics That Avoid an Automatic Denial
The chart has to match the claim under review date of service by date of service, organized in the order the MAC's cover sheet requests, not forwarded as a full patient chart. Most MACs accept submission by mail, fax, or the CMS esMD electronic gateway, and confirming receipt matters as much as sending it. A packet never logged as received by the contractor is functionally the same as a packet that was never sent. Medicare Wound Care Documentation: The Chart That Survives Audit walks through building that record before an ADR ever arrives, and a claim held past the initial request often lands in Wound Care Prepayment Review: Documentation That Releases Claims territory, where the same chart elements determine whether the hold lifts.
Why Early Legal Counsel Is Critical
It is critical that wound care providers promptly retain experienced healthcare defense counsel upon receiving a Medicare Administrative Contractor's Additional Documentation Request, particularly when the request signals prepayment review or a broader documentation audit. Early legal intervention can protect the provider's rights, ensure the submitted record answers every element the reviewer is checking, avoid inadvertent admissions in cover letters or attestations, and allow counsel to communicate with the contractor on the provider's behalf. Delaying representation can shorten the runway inside the 45-day window and increase the eventual professional fees and exposure if the claim is denied and moves to appeal.
How Health Law Alliance Can Help
Health Law Alliance has handled 5,000+ matters across healthcare regulatory and audit defense over 25+ years, including wound care claims held in Medicare Administrative Contractor prepayment review and the ADR responses that determine whether those claims are paid. If your practice has received a wound care ADR or is already inside prepayment review, contact Health Law Alliance's wound care audit defense attorneys for a free, confidential consultation before the 45-day window runs.
