Wound Care Timely Filing: Deadlines That Cost You Revenue

Wound Care Timely Filing: The Invisible Revenue Killer

Timely filing deadlines are the hardest line in wound care revenue cycle management. Miss the deadline by one day, and the payer has no obligation to pay the claim — regardless of how well it was documented, how valid the services were, or how much the patient needed that debridement. The money is gone. No appeal. No exception. No second chance.

For wound care practices billing across multiple payers, timely filing is especially dangerous because every payer has a different deadline. Medicare gives you a year. Some commercial payers give you 90 days. Medicaid varies by state from 90 days to 365 days. A practice that treats patients across four payer types has four different clocks running simultaneously, and the shortest one is always the one that matters.

This post covers the filing deadlines that apply to wound care claims, what to do when a deadline is approaching, and how to build a tracking system that prevents timely filing losses entirely.

Timely Filing Deadlines by Payer

Medicare: 365 Calendar Days

Medicare requires initial claim submission within one calendar year (365 days) from the date of service. This is the most generous deadline wound care practices encounter, and it is still the one that catches practices off guard — because a year feels like plenty of time until it is not.

The 365-day clock starts on the date of service, not the date of the encounter note or the date the claim was generated. For wound care services that span multiple dates — like a denial prevention rework that goes through three rounds of documentation correction — the clock is always ticking from day one.

Medicare timely filing exceptions are extremely narrow:

Administrative error by CMS or the MAC (not by your practice)
Retroactive Medicare entitlement (patient was not known to be Medicare-eligible at the time of service)
Retroactive disenrollment from a Medicare Advantage plan

"We didn't know the patient had Medicare" is not an exception if the practice had access to eligibility verification at the time of service. "Our biller was out for two months" is never an exception.

Medicaid: 90 to 365 Days (State-Dependent)

Medicaid timely filing rules are set by each state. Wound care practices operating across state lines — or treating Medicaid patients who cross state lines for care — must track each state's deadline separately.

Representative Medicaid filing deadlines:

State	Filing Deadline
Florida	365 days
Texas	365 days (95 days for clean claims)
California	180 days
New York	90 days
Pennsylvania	180 days
Ohio	365 days
Georgia	365 days
Illinois	180 days

Critical nuance: Some states distinguish between initial claims and corrected/resubmitted claims. In Texas, a clean claim must be filed within 95 days, but a corrected claim can be filed within 120 days of the clean claim deadline. Check your specific state's rules — assumptions based on one state's rules will burn you in another.

Commercial Payers: 90 to 180 Days

Commercial payers set their own filing deadlines in the provider contract. These are typically shorter than Medicare and are legally binding — the contract you signed governs, not a federal regulation.

Common commercial filing windows:

UnitedHealthcare: 90-180 days (varies by plan)
Aetna: 90 days for most plans
CIGNA: 90 days from date of service
Blue Cross Blue Shield: 90-365 days (varies by state BCBS entity)
Humana: 90 days

The contract governs. If your contract says 90 days and you file on day 91, the claim is dead. It does not matter that you had a valid reason for the delay. The contract deadline is absolute unless the payer has a written exception policy — and most do not.

Medicare Advantage: Contract-Dependent

Medicare Advantage plans are commercial contracts that follow Medicare coverage rules but set their own administrative rules, including timely filing. Most MA plans mirror Medicare's 365-day window, but some impose shorter deadlines — 180 days is common. Check each MA plan's provider manual.

What to Do When a Deadline Is Approaching

45-Day Warning: Escalate

When a claim is 45 days from its filing deadline and has not been submitted, it is an emergency. Stop everything else in the billing queue and prioritize this claim.

If the claim is pending because of incomplete documentation, contact the treating clinician directly. Do not send an email and wait. Call, get the missing information, and complete the claim.

If the claim is pending because of a prior denial and appeal, file the appeal immediately — even if the appeal is not perfect. A submitted appeal within the filing window preserves the claim. An unsubmitted perfect appeal after the deadline is worthless.

14-Day Warning: File What You Have

At 14 days from deadline, submit the claim as-is. A claim that gets denied for a fixable reason can be corrected and resubmitted (if the corrected claim deadline allows it). A claim that was never submitted cannot be fixed.

Filing a claim with a known deficiency is better than not filing. The initial submission establishes proof of timely filing. The correction comes after.

Missed Deadline: Limited Options

Once a deadline passes, options are narrow:

Check for payer-specific reconsideration policies. Some payers allow late filing with documented proof that the delay was caused by the payer (incorrect eligibility information, system outages, misdirected claims).
Check for retroactive eligibility. If the patient's insurance coverage was established retroactively, the timely filing clock may reset from the date the practice was notified of coverage.
Document the loss. Track every timely filing loss by payer, dollar amount, and root cause. This data drives process improvement and renegotiation leverage.

Building a Timely Filing Tracking System

Prevention is the only reliable strategy. By the time you are scrambling to meet a deadline, revenue is already at risk.

Aging report segmented by filing deadline

Your practice management system should generate an aging report that shows unbilled encounters by payer, with the filing deadline for each payer displayed alongside the date of service. The report should flag claims at 30 days, 60 days, and 90 days from their respective deadlines.

A single aging bucket (0-30, 31-60, 61-90) is not sufficient for multi-payer wound care practices. A claim at day 60 is fine for Medicare but critical for a 90-day commercial payer. The report must reflect payer-specific urgency.

Weekly filing deadline review

Every week, someone in the billing operation reviews all claims within 45 days of their filing deadline. This is not a monthly task. Wound care practices generate enough claim volume that a monthly review will miss fast-approaching commercial deadlines.

Root cause tracking

When a claim approaches its filing deadline, record why. The categories that matter for revenue cycle KPIs:

Incomplete documentation — clinician did not complete the note
Missing prior authorization — auth was not obtained before the service
Eligibility verification failure — wrong payer identified at intake
Claim rejection not reworked — initial submission was rejected, rework was not prioritized
Coding review backlog — claims queued for coding were not processed in time

The root cause tells you where to invest: more clinical documentation support, faster eligibility verification, or additional coding capacity.

Key Takeaways

Medicare gives 365 days; many commercial payers give only 90 days — a multi-payer wound care practice has multiple filing clocks running simultaneously, and the shortest one is always the one that matters.
Timely filing deadlines are absolute — "we didn't know" and "our biller was out" are never valid exceptions for Medicare or most commercial payers.
File the claim even if it is imperfect — a denied claim within the filing window can be corrected, but an unfiled claim after the deadline is gone permanently.
Weekly aging reviews segmented by payer-specific deadline are the only reliable prevention — a single monthly aging report misses fast-approaching commercial deadlines.