Denial Code CO-281
Deductible waived per contractual agreement. Use only with Group Code CO
Recommended action: write off, do not appeal
Write off the adjustment amount. This code represents a contractual term, mandatory reduction, or informational-only adjustment rather than a provider error. Filing an appeal does not change the outcome because the adjustment is required by your provider agreement, statute, or administrative accounting rules.
The PayerReady Medical Coding Team has not authored specific guidance for CO-281. The classification and any sample correspondence below are generated from the X12 denial-code group and prefix only. Verify your specific claim circumstances and your payer's current appeal or resubmission policy before sending any correspondence. For expert guidance on the most-common denial codes, see CO-45, CO-97, CO-50, and other curated pages.
CO-281 FAQ
What does denial code CO-281 mean? +
Denial code CO-281 indicates: Deductible waived per contractual agreement. Use only with Group Code CO. This falls under Contractual Obligations (provider writes off).
Can I appeal a CO-281 denial? +
No. CO-281 is a contractual write-off, not an error. It represents the negotiated difference between your billed charge and the payer-allowed amount under your provider contract. Filing a written appeal creates friction with the payer without changing the outcome. Write off the adjustment.
Can I bill the patient for a CO-281 denial? +
No. CO-281 is a contractual write-off between you and the payer under your participating provider agreement. Billing the patient for the contractual adjustment amount would violate that agreement.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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