Quick Explanation
Denial code CO-160 indicates that the services billed are not covered under the patient's specific insurance benefit plan. This usually occurs when the service is an explicit policy exclusion, such as cosmetic procedures, investigational treatments, or injuries resulting from specific types of accidents not covered by the policy.
Common Causes for CO-160
Denials with code CO-160 typically happen for the following specific reasons:
- The billed service is a listed policy exclusion under the patient's benefit plan, such as bariatric surgery, cosmetic services, or routine foot care.
- The treatment is related to an accident (such as a motor vehicle or work-related injury) that is excluded under the health plan or must be primary to a third-party liability insurer.
- Failure to obtain a formal pre-determination of benefits for a non-routine service that is highly restricted under the payer's medical policy.
- Incorrect use of ICD-10 external cause codes that mistakenly flag the service as being related to an excluded category of accident or injury.
How to Prevent CO-160 Denials
To avoid receiving this denial in the future, implement these specific checks:
- Conduct comprehensive pre-service eligibility checks to verify specific plan exclusions, benefit limits, and coverage rules for the scheduled procedure.
- Utilize the pre-determination process for elective or specialized procedures to get written confirmation of coverage before treatment is initiated.
- Establish a clear workflow to secure signed Advanced Beneficiary Notices (ABNs) or commercial waivers so patients understand their financial responsibility if a benefit is excluded.
- Review and validate ICD-10 diagnosis codes on the claim to ensure they accurately reflect the patient's etiology without incorrectly triggering accident-related exclusions.
Appeal Letter Template for CO-160
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-160 - Benefits are not available under this plan
Dear Appeals Department,
I am writing to appeal the denial of the above-referenced claim, which was denied with code CO-160: "Benefits are not available under this plan".
We are appealing the denial of this claim for procedure code [Procedure Code], which was denied under code CO-160 (Benefits are not available under this plan). Upon thorough review of the patient's medical record, the rendered service was medically necessary and performed to treat [Condition/Illness], which is not subject to the policy exclusions cited. The clinical documentation clearly demonstrates that this condition is a standard covered medical benefit under CMS and AMA guidelines, and is not the result of a third-party liability accident or an excluded cosmetic/investigational procedure. We request that you review the attached clinical chart notes and reverse this denial to process the claim for payment in accordance with the patient's active health benefits.
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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