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The Handful of Denial Codes Behind Most of Your Money

Denials follow a power law. A small set of CARC and RARC codes accounts for most of the dollars, which makes grouping by code better than working the queue in order.

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2 min read · by White Glove Medical Billing
A few tall columns standing among many short ones

Open a denial queue and it looks like chaos — dozens of reason codes, no obvious order, hundreds of claims. It is not chaos. Denials are distributed like almost everything else in business: a small number of causes account for most of the money.

Codes are not evenly expensive

Every denial carries a claim adjustment reason code and often a remittance advice remark code. Sorted by count, the list looks flat. Sorted by dollars, it usually is not: a handful of codes carry the balance, and they are frequently not the most numerous ones.

This is why working a queue chronologically underperforms. Chronological order is a proxy for urgency that ignores value entirely, and it spreads effort evenly across causes that are not evenly worth solving.

The groups worth separating

  • Eligibility and coverage. Preventable at the front desk, and they recur until somebody changes the intake process.
  • Authorization. Also preventable, also upstream, and frequently the highest-balance group because authorized services tend to be expensive ones.
  • Bundling and coding edits. Fixable in coding, and they repeat systematically rather than occasionally.
  • Medical necessity. A documentation problem, and the group where appeals actually change outcomes.
  • Timely filing. Not recoverable. Worth counting only to prove the process failed.

The report to ask for

Denials by reason code, by payer, sorted by dollars rather than count, for a rolling quarter. That single view usually names your top three problems in one glance — and two of them will turn out to live outside the billing office.

Denials Piling Up?

We handle the revenue cycle end to end — coding by certified coders, claim submission, denial management and appeals, and A/R follow-up, with six reported numbers every month.

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