Denial Management
Every denial arrives with a structured explanation. CARC codes (Claim Adjustment Reason Codes) state why the payment differs from the billed amount; RARC codes (Remittance Advice Remark Codes) add detail.
Prevention and Management Are Different Budgets Solving One Problem
A large share of denials are predictable at submission: guide non-conformance, a known payer edit, an eligibility failure that was misread as coverage, a COB (coordination of benefits) order that was wrong. These are cheaper to prevent than to manage.
What remains after prevention is the genuine appeal population: medical necessity, documentation, and legitimate disputes. That is a smaller and more valuable queue to work.
Reading the 835
Read the 835 as Reasoning
CARC and RARC together are the payer's structured account of its decision. Aggregated across a payer and a service line, they show which denials are systemic and which are one-off. Aggregated across payers, they show which of your processes is producing them. This analysis is available in data you already receive. The obstacle is that posting workflows are optimized to extract the dollar amount and move on.
Upstream Causes Hide Downstream
An eligibility AAA 72 (the 271 response code for a subscriber not found) misread as inactive coverage becomes a claim to the wrong payer, becomes a denial, becomes an appeal. A COB error becomes a denial that presents as a coding problem. A secondary claim that failed to carry the primary's 835 adjustment data forward looks like a coding denial and is a data carry-forward denial. Denial management that starts at the denial is working the symptom.
Frequently Asked Questions
What are CARC and RARC codes?
Claim Adjustment Reason Codes state why a payment differs from the billed amount. Remittance Advice Remark Codes supply supplemental explanation. Both are carried in the X12 835 and together form the payer's structured account of its adjudication decision, the basis for any appeal.
How do you reduce claim denials?
Separate prevention from management. A large share of denials are predictable at submission (implementation guide non-conformance, known payer edits, misread eligibility rejections, wrong COB order) and should be caught before transmission. What remains is the genuine appeal population, which is smaller and more worth working.
Why do denials often have upstream causes?
Because the failure and the symptom are separated by time and workflow. An AAA 72 misread as inactive coverage becomes a claim to the wrong payer and then a denial. A secondary claim that did not carry the primary 835's adjustment data forward presents as a coding denial. Working the denial rather than the cause guarantees the denial recurs.
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