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CO-27 - Denial Journal
CARC CO — Contractual Obligation

CO-27

Expenses incurred after coverage terminated

What This Code Means

The date of service falls after the patient’s coverage with this plan had already ended.

Common Causes

  • Patient's coverage terminated mid-month
  • Eligibility not verified close to date of service
  • Patient switched plans without notifying the practice

How to Resolve or Appeal

  1. Re-verify eligibility for the actual date of service
  2. Identify and bill the patient's new active plan if one exists
  3. Confirm termination date isn't a payer system error
  4. Bill patient per your financial policy if no coverage exists

Related Codes

CO-26

More Denial Codes to Check

CARC CO-D23 CARC CO-177 RARC MA60 CARC CO-28 CARC CO-100 RARC MA86 CARC CO-227 CARC CO-31 Patient cannot be identified as our insured CARC CO-13 The date of death precedes the date of service CARC CO-239 CARC CO-33 Insured has no dependent coverage CARC CO-178 CARC CO-141

Educational reference only — not medical or legal advice. Always confirm code usage and appeal rights with the specific payer.

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