Claim Denial Management: Why Claims Get Denied and How to Get Paid

Every practice gets denials, but many never get reworked. Each unworked denial is money the practice has already earned. A good denial management process does two things: it recovers payment on denied claims and it prevents the same denial from happening again.

Denials vs. rejections

A rejection happens before the claim is accepted – usually at the clearinghouse – because of missing or invalid data. It can be corrected and resubmitted. A denial means the payer processed the claim and decided not to pay all or part of it. Denials must be corrected, resubmitted or appealed within the payer's deadlines.

The most common denial reasons

• Eligibility – coverage ended, wrong payer or wrong member ID
• Missing prior authorization or referral
• Coding errors – NCCI edits, missing modifiers, diagnosis not supporting the procedure
• Duplicate claims
• Timely filing – claim or appeal sent after the deadline
• Medical necessity – documentation does not support the service
• Provider not credentialed or not linked to the group with the payer

Reading denial codes

Every denial on an ERA or EOB carries a Claim Adjustment Reason Code (CARC) and often a Remittance Advice Remark Code (RARC). Together they tell you why the claim was not paid – for example CO-16 (missing information), CO-50 (not medically necessary) or CO-197 (authorization absent). Grouping denials by these codes shows where the real problems are.

A simple denial management process

1. Work denials quickly. Review new denials every day while details are fresh and deadlines are far away.
2. Sort by cause and value. Fix high-dollar and easy-to-correct denials first.
3. Correct and resubmit claims with fixable errors such as wrong IDs or codes.
4. Appeal when the claim was correct, with a clear letter, the medical records and the payer's own policy. For Medicare, a redetermination must be requested within 120 days of the initial determination.
5. Fix the root cause – front-desk eligibility checks, authorization tracking, coding education or payer enrollment.
6. Measure your denial rate and appeal success every month.

Prevention pays more than appeals

Most denials are preventable. Eligibility checks before the visit, authorization tracking and claim scrubbing stop the majority of denials before they happen. Many practices aim to keep their initial denial rate under 5%.