CO-199: Revenue Code and Procedure Code Mismatch
Revenue code and procedure code do not match. The revenue code submitted on the institutional claim is not compatible with the procedure code billed.
Why Claims Get Denied with CO-199
Denial code CO-199 is triggered when revenue code and procedure code do not match. the revenue code submitted on the institutional claim is not compatible with the procedure code billed. Understanding the root causes helps prevent future denials and strengthens your appeal when one occurs.
Incorrect revenue code assigned to the procedure
Revenue code does not correspond to the department or service type of the procedure
Chargemaster mapping error between revenue code and CPT/HCPCS
Pharmacy revenue code used with a non-drug procedure code or vice versa
How to Appeal CO-199
Review the revenue code and procedure code pairing to identify the mismatch. Correct the revenue code to match the service type of the procedure code. Reference CMS revenue code guidelines and the payer's specific revenue code requirements. Resubmit with the corrected revenue code.
Documentation Required for Appeal
A successful appeal of CO-199 requires thorough documentation. Gather these items before drafting your appeal letter:
Corrected claim with matching revenue and procedure codes
CMS revenue code guidelines
Chargemaster showing the corrected mapping
Payer-specific revenue code requirements
How to Prevent CO-199 Denials
Audit chargemaster revenue code-to-CPT mappings regularly. Verify revenue code requirements for each payer. Train billing staff on correct revenue code assignments for institutional claims.
Stop Fighting CO-199 Denials Manually
RediClaim generates payer-specific appeal letters for CO-199 denials in under 60 seconds, complete with the clinical arguments and documentation references that win reversals.