9Denial Code (CARC)Active
CO 9 Denial Code: Fix Age-Diagnosis Mismatch
Code 9 indicates that the diagnosis code submitted on the claim does not align with the patient's age. This inconsistency prevents the payer from processing the claim as submitted. The diagnosis might be inappropriate for the age of the patient listed, leading to this denial.
Who Pays: Group Code Liability
For code 9, the adjustment typically falls under the CO group code, meaning it is a contractual write-off and the patient cannot be billed for this denial. Correcting the claim may resolve the issue.
Why Claims Get Code 9
- The patient's date of birth was entered incorrectly in the system.
- The diagnosis code used is not age-appropriate for the patient.
- A pediatric diagnosis was used for an adult patient.
- The patient's age was not updated in the system after a birthday.
- An incorrect patient was selected during claim creation.
How to Fix & Resubmit
- Verify the patient's date of birth in the system and ensure it's accurate.
- Check the diagnosis code used and confirm it aligns with the patient's age.
- Correct any errors in patient age or diagnosis code in the billing system.
- Submit a corrected claim with the updated information to the payer.
- If necessary, consult payer guidelines for age-specific diagnosis codes.
Corrected Claim or Appeal?
For code 9, submitting a corrected claim is the appropriate action after verifying and updating the patient's age or diagnosis code. A formal appeal is unnecessary unless the payer's policy is unclear.
Preventing Future 9 Denials
- Ensure accurate entry of patient demographics during registration.
- Verify diagnosis codes are age-appropriate before claim submission.
- Regularly update patient information in the billing system.
- Implement a checklist for age verification during claim creation.