Quick Explanation
Denial code CO-95 indicates that the payer has denied payment because the service or procedure billed required an approved prior authorization that was not obtained before the care was rendered or was not correctly linked to the submitted claim. This requires healthcare providers to verify authorization rules for specific CPT codes and ensure valid authorization numbers are submitted on the claim.
Common Causes for CO-95
Denials with code CO-95 typically happen for the following specific reasons:
- Failure to verify the patient's insurance benefits and pre-authorization requirements prior to performing scheduled elective procedures.
- Billed CPT/HCPCS codes, rendering provider, or date of service did not match the details specified on the approved authorization letter.
- Omission of the approved prior authorization number in Box 23 of the CMS-1500 form or Loop 2300 of the 837P electronic transaction.
- An emergency service or urgent admission transitioned into a scheduled procedure without notifying the payer to secure retrospective authorization within the required timeframe.
How to Prevent CO-95 Denials
To avoid receiving this denial in the future, implement these specific checks:
- Implement a robust insurance verification workflow at least 72 hours prior to scheduled services to identify exact pre-authorization rules by payer.
- Utilize automated billing scrubbers and electronic clearinghouse rules to flag claims missing authorization numbers for designated CPT/HCPCS codes.
- Establish a standard protocol to cross-reference and match approved authorization letters against final coding prior to claim submission.
- Implement retrospective authorization workflows for emergency cases, ensuring clinical documentation is submitted to the payer within their designated post-service window.
Appeal Letter Template for CO-95
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-95 - Plan procedures/services must be preauthorized
Dear Appeals Department,
I am writing to appeal the denial of the above-referenced claim, which was denied with code CO-95: "Plan procedures/services must be preauthorized".
We are appealing the denial of this claim under code CO-95 for lack of prior authorization. In this clinical scenario, the patient presented with an acute condition that demanded immediate medical intervention, making advance authorization administratively impossible and clinically unsafe under EMTALA guidelines and standard medical necessity definitions. The enclosed medical records, including operative reports and physician clinical notes, demonstrate that the procedure was medically necessary and met all diagnostic criteria. We request a retrospective clinical review of the attached documentation and ask that the prior authorization requirement be waived and the claim processed for payment in accordance with medical necessity guidelines.
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]
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