Home Denial Codes CO-140
Denial Code CO-140

Patient/Insured health identification number and name do not match (Updated for 2026)

Patient/Insured health identification number and name do not match

Quick Explanation

Denial code CO-140 indicates that the claim was rejected because the patient's name or health identification number submitted on the claim form does not match the information on file with the insurance payer. This discrepancy prevents the insurer's system from verifying eligibility and validating that the claim belongs to the correct covered individual.

Common Causes for CO-140

Denials with code CO-140 typically happen for the following specific reasons:

How to Prevent CO-140 Denials

To avoid receiving this denial in the future, implement these specific checks:

Appeal Letter Template for CO-140

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-140 - Patient/Insured health identification number and name do not match

Dear Appeals Department,

I am writing to appeal the denial of the above-referenced claim, which was denied with code CO-140: "Patient/Insured health identification number and name do not match".

We are writing to appeal the denial of this claim (CO-140) by submitting the verified and corrected demographic details for the patient. Enclosed please find a copy of the patient's active insurance card and a corrected claim form displaying the precise name and member identification number as formatted in your system. Pursuant to CMS claims processing guidelines and standard HIPAA transaction standards, we have resolved the administrative mismatch, proving active eligibility on the date of service. We respectfully request that this corrected claim be reprocessed and adjudicated for payment without further delay.

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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