CARC B20 Active

PR-B20: Service Partially or Fully Furnished by Another Provider

TL;DR

Another provider already billed for part or all of this service. Coordinate billing between providers and use appropriate modifiers (62, 80, 81 for shared surgery; TC/26 for split billing) to distinguish your portion.

Action
Review & Decide
Who Pays
Patient
Appeal
No
Patient Impact
Direct Financial
Disclaimer
This content is for informational purposes only and does not constitute professional billing advice. Always verify information against your payer contracts and current coding guidelines. Consult a certified billing specialist for specific claim issues.

What Does PR-B20 Mean?

CARC B20 indicates the payer denied or reduced the claim because another provider has already billed for part or all of the same service for the same patient on the same date. The payer detected an overlap in billing between two providers.

This commonly occurs with shared surgical services where multiple surgeons or assistants participated, transfer of care situations where both the outgoing and incoming providers billed for overlapping services, facility vs. professional component overlap, and locum tenens billing conflicts.

The resolution depends on the nature of the overlap. If the providers genuinely shared the service, appropriate modifiers must be used to distinguish each provider's contribution. If one provider's billing was in error, the incorrect claim should be corrected or withdrawn.

How to Resolve

Identify the other provider's claim, determine the billing overlap, and rebill with appropriate modifiers or coordinate to resolve the conflict.

  1. Identify the other provider Determine which provider submitted the overlapping claim and what services they billed.
  2. Determine the overlap nature Assess whether the overlap is from shared surgery, transfer of care, TC/26 component split, or a billing error.
  3. Apply appropriate modifiers Use the correct modifiers to distinguish your provider's portion: 62 for co-surgery, 80/81 for assistant surgeon, TC for technical component, 26 for professional component.
  4. Coordinate with the other provider Contact the other provider to coordinate billing and prevent future overlaps.
  5. Appeal with documentation If the services were distinct, appeal with operative reports and procedure notes showing each provider's specific contribution.
Do Not Appeal This Code

Service Partially or Fully Furnished by Another Provider grouped under PR places the financial responsibility on the patient. The specific reason depends on the context of this adjustment — review any accompanying RARC codes for detail. Because this represents a placement of responsibility rather than a coverage denial, an appeal isn't the right action; verify the placement is correct before billing the patient.

Also Filed As

The same CARC B20 may appear with different Group Codes:

CO-B20 OA-B20

Related Denial Codes

PR-13 — Date of Death Precedes Date of Service PR-14 — Date of Birth Follows Date of Service PR-19 — Workers' Compensation Claim PR-20 — Liability Carrier Responsible PR-21 — No-Fault Carrier Responsible

Sources

  1. https://x12.org/codes/claim-adjustment-reason-codes
  2. https://www.cms.gov/regulations-and-guidance/guidance/manuals
  3. Codes maintained by X12. Visit x12.org for official definitions.