How do I resolve a CO-B15 denial?

Appeal claim with documentation to support need post-surgery If brace provided post-surgery, claim should adhere to the following guidelines: See full Medicare contractor resolution steps at tryarceum.com.

Can I appeal a CO-B15 denial?

Yes. Most CO-B15 denials can be appealed within 60-180 days depending on payer. This is appealable if the qualifying service was actually received and covered but the payer failed to recognize it, or if documentation proves the prerequisite requirement was met. Use our free tool to generate an appeal letter.

CARC Code

B15

🟡 Soft Denial

Qualifying Service Not Yet Adjudicated

The claim was denied because the service billed requires another service to be performed and paid first, but that other service hasn't been received or processed yet by the insurance company.

authorization

Resolution: 85%Easy difficulty3-7 days avg

How to resolve this denial

Which payer denied this claim?

▶✓ Pre-action checklist — verify before contacting the payer

Review the full remittance advice (ERA/EOB) for additional RARC codes that explain the denial.
Verify the claim was submitted with correct patient eligibility and benefit information.
Check if this denial applies to a specific line item or the entire claim.

▶More about CO-B15 — stats, related codes, appeal template

85%

Recovery Rate

3-7 days

Avg. Resolution

Easy

Difficulty

Rare

Frequency

Payer-Specific Notes

How major payers handle CARC B15 by specialty.

General

Confirm payer-specific policy for CARC B15 and submit corrected claim or appeal as appropriate.

Common 835 Combinations

CARC B15 most often appears with these Group Code + RARC combinations on 835 remittances.

COCO-B15+M114There was not a Part B practitioner claim on file with the same date of service COCO-B15+M51Administration fee billed with no drug billed within required time frame COCO-B15+N674There was not a Part B practitioner claim on file with the same date of service

Look up any combination →

Appeal Letter Template

Generic appeal template for CARC B15 denials.

Dear [Payer Name] Appeals Department, We are writing to appeal the denial of claim [CLAIM #] for patient [PATIENT NAME] (Member ID: [ID]) for services rendered on [DATE OF SERVICE]. The claim was denied with CARC B15: "This service/procedure requires that a qualifying service/procedure be received and covered." We believe this denial is in error for the following reasons: [INSERT CLINICAL/ADMINISTRATIVE JUSTIFICATION] We respectfully request reconsideration and payment of this claim. Sincerely, [Provider Name / Billing Contact]

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