Back to All Codes
164
CO - Contractual ObligationPayment Adjustment
Denial Code CO-164: Penalty for Non-Compliance
What Does Code 164 Mean?
Penalty for failure to comply with payer requirements such as timely claim filing, required notifications, or documentation standards.
Group Code CO (Contractual Obligation): The provider has agreed to accept the payer's determination. The patient is generally not responsible for this amount.
Why Does This Happen?
Late filing, missed notification requirements, or failure to follow payer protocols.
How to Resolve It
- 1Identify the specific non-compliance issue
- 2Correct the process to prevent future penalties
- 3Appeal if the penalty was applied in error
Want the full strategy?
The P2P Playbook covers payer-specific approaches for denial code CO-164 -- plus 15 denial objections with word-for-word responses, what reviewers are actually thinking, and the 60-second prep framework. Written by a medical director who reviewed cases for major payers.
Get The P2P Playbook -- $39