B15Denial Code (CARC)Active
Effective 01/01/1995 · Updated 07/01/2017

Denial Code B15 - Qualifying Service Required

Code B15 means the service or procedure you billed requires a related service or procedure to have been performed and covered first. Essentially, the insurance is saying that the necessary precursor service wasn't received or processed yet.

Who Pays: Group Code Liability

Typically, group code CO applies here, meaning it's a contractual obligation and the patient should not be billed. However, if the precursor service was the patient's responsibility and not completed, check with the payer to confirm if PR applies instead.

Why Claims Get Code B15

  • The required precursor service was not performed or billed.
  • The precursor service was performed but not covered by the payer.
  • The claim for the precursor service is still pending adjudication.
  • Incorrect or missing information about the precursor service in the claim.
  • The precursor service was billed under a different patient or policy.

How to Fix & Resubmit

  1. Verify if the precursor service was indeed performed and billed correctly.
  2. Ensure the precursor service claim was submitted and check its status with the payer.
  3. If the precursor service was not performed, schedule it or contact the patient as necessary.
  4. Correct any errors in the information about the precursor service on the claim.
  5. Submit a corrected claim once the precursor service is adjudicated and covered.

Corrected Claim or Appeal?

Submit a corrected claim once the qualifying service is completed and properly adjudicated. If the service was performed but denied incorrectly, consider a formal appeal with supporting documentation.

Preventing Future B15 Denials

  • Ensure all required precursor services are scheduled and completed before billing.
  • Verify coverage of precursor services prior to performing dependent services.
  • Use software checks to flag claims missing necessary precursor services.
  • Educate front desk staff on verifying service dependencies during patient check-in.