CO-24: Charges covered under a capitation agreement

What causes it

• Patient enrolled in a managed care plan the practice did not know about
• Claim sent to the wrong entity — the plan rather than the capitated group, or the reverse
• The service genuinely falls inside a capitation arrangement the practice holds
• Eligibility check did not surface the managed care assignment

How to work it

1. Check eligibility for the date of service and identify which entity carries the risk.
2. If the patient is assigned to a capitated group, bill that group under its own process rather than resubmitting to the payer.
3. If the practice holds the capitation, the balance is not billable and belongs in a contractual adjustment — read the group code before moving anything.
4. If the assignment is wrong, escalate to the payer’s provider relations with the eligibility record.

How to stop it recurring

Check managed care assignment at eligibility, not just active coverage. Assignment changes monthly and is invisible on a card.

Codes worked the same way

CO-24 is fixed at coordination of benefits and rebilled. So are these, which is why a queue sorted by recovery route moves faster than one sorted by code number — the same person, in the same system, with the same evidence to hand, clears all of them in one pass.

• CO-22 — May be covered by another payer
• CO-27 — Coverage had already ended
• CO-109 — Wrong payer or contractor
• CO-119 — Benefit maximum reached
• PR-31 — Patient not found as insured
• CO-32 — Not an eligible dependent

Specialties that name this among their costliest

These are specialties whose own worst denials include one of this kind. The line under each is the denial they name, quoted from their page so you can see what the link is based on.

• Behavioral Health
  Add-on codes billed without the primary service
• Podiatry
  Orthotics denied for coverage exclusion
• Obstetrics & Gynecology
  Coverage checked once at the first prenatal visit and never rechecked, so the delivery claim months later goes to a plan the patient has already left.
• Urgent Care
  Coverage taken from whatever card the walk-in hands over at the desk and never checked against the plan, so the claim goes to a policy the patient left months ago
• Primary Care
  Low-dollar denials — the patient assigned to a different primary care provider, a wrong place of service — left in the queue as not worth the call, then aged past timely filing.
• Clinical Laboratory and Pathology
  Tests denied for a diagnosis not on the coverage policy's approved list

What leaving it costs

Working a denied claim costs $57.23 per denied claim in administrative time. Source. At 100 denials a month — an illustration, not a measurement of your practice — that is $5,723 a month, or $68,676 a year, in labour alone.

The figure that makes it worth spending: about 90% of initially denied claims are eventually paid. Source. The reason a denial sits is almost never that nobody knows how to work it — it is that nobody has the hours.

Questions

Code descriptions are the standard X12 claim adjustment reason and remittance advice remark code text. Payer policies differ, and the payer’s own coverage policy governs any individual claim. This page is working guidance, not legal or clinical advice.