Quick Explanation
Denial code CO 197 indicates that a claim was denied because the required precertification, prior authorization, referral, or pre-treatment notification was absent or not obtained before services were rendered. This is particularly common in behavioral health, where payers require strict utilization management review to verify the medical necessity of specialized or ongoing treatments. Without a valid, matching authorization number on the submitted claim, the payer will automatically reject the charges.
Common Causes for CO 197
Denials with code CO 197 typically happen for the following specific reasons:
- Failing to obtain prior authorization before initiating specialized behavioral health services, such as intensive outpatient programs (IOP), partial hospitalization (PHP), or extended psychotherapy sessions.
- Submitting the claim with a missing, incorrect, or expired prior authorization number in Box 23 of the CMS-1500 form or Loop 2300 of the 837 electronic claim.
- Exceeding the approved number of treatment units, visits, or dollar limits authorized by the insurance payer's utilization management department.
- Providing services outside the approved authorization date range or delivering a level of care that deviated from the initial precertification agreement.
How to Prevent CO 197 Denials
To avoid receiving this denial in the future, implement these specific checks:
- Establish a rigorous insurance verification protocol at intake to identify specific behavioral health authorization requirements before the patient's first appointment.
- Utilize automated billing system rules and clearinghouse scrubs to block claims from being submitted if the authorization field is blank for codes requiring precertification.
- Track authorized units and expiration dates within the Electronic Health Record (EHR) to proactively initiate re-authorization requests before current approvals expire.
- Conduct regular audits of utilization review processes to ensure clinical documentation matches the specific level of care authorized by the payer.
Appeal Letter Template for CO 197
If you believe this claim was denied incorrectly, you can use the following template to submit an appeal.
[Your Practice Header]
[Date]
[Payer Name]
[Appeals Department Address]
RE: Appeal for Claim [Claim Number]
Patient: [Patient Name]
ID: [Patient ID]
Date of Service: [Date]
Denial Code: CO 197 - Behavioral Health denial code
Dear Appeals Department,
I am writing to appeal the denial of the above-referenced claim, which was denied with code CO 197: "Behavioral Health denial code".
We are writing to formally appeal the denial of this claim under code CO 197 for behavioral health services. While the claim was processed as lacking prior authorization, a review of the clinical circumstances shows that the services rendered were medically necessary and met all CMS and AMA criteria for the patient's behavioral health treatment plan. [Alternative 1: Enclosed please find proof of the approved authorization under number [Insert Auth Number] which was active for the dates of service billed.] [Alternative 2: Due to the urgent nature of the patient's clinical presentation, immediate intervention was medically necessary, making advance precertification unfeasible under emergency care guidelines.] We have enclosed the complete clinical documentation, treatment plan, and authorization details, and we respectfully request that you retroactively approve the authorization and reprocess this claim for full payment.
Attached please find:
1. A copy of the original claim.
2. The relevant medical records supporting the service.
3. [Any other supporting documents].
We respectfully request that you reprocess this claim for payment.
Sincerely,
[Your Name]
[Title]
[Practice Name]
Stop Writing Appeals Manually
Clausea can read your medical records and generate custom, evidence-based appeals for denial code CO 197 in seconds.
Generate Appeal for CO 197 Now