CARC 58 Active

OA-58: Inappropriate or Invalid Place of Service

TL;DR

Adjustment in a COB or secondary payer context. Review the coordination of benefits details to determine the responsible party.

Action
Appeal
Who Pays
Depends
Appeal
Yes
Patient Impact
Indirect
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 OA-58 Mean?

With OA (Other Adjustments), CARC 58 typically appears in a coordination of benefits (COB) context. Secondary payer deems POS inappropriate. The financial responsibility depends on the specific arrangement between payers — review the primary payer's EOB and the COB terms to determine the correct course of action.

CARC 58 indicates inappropriate or invalid place of service. The payer determined that the service or a portion of it does not meet coverage criteria under the patient's current plan benefits or the applicable coverage rules.

Common scenarios that trigger this adjustment include: payer determined the service could have been appropriately performed in a less expensive setting (e.g., outpatient instead of inpatient); The specific place of service is not approved by the payer for this type of procedure; Payer policy restricts certain services to specific types of facilities. The group code paired with CARC 58 determines who bears the financial responsibility — CO places it on the provider as a contractual obligation, PR shifts it to the patient, OA indicates a coordination of benefits or other payer adjustment.

Common Causes

Cause Frequency
Secondary payer POS appropriateness Secondary payer deems POS inappropriate Most Common

How to Resolve

  1. Review the coordination of benefits Examine the OA-58 adjustment to understand how it fits within the primary/secondary payer relationship or other multi-payer context.
  2. Verify primary payer adjudication Review the primary payer's EOB to understand the basis for the secondary payer's OA adjustment.
  3. Determine the responsible party Based on the COB review, identify whether the adjustment should be absorbed, billed to another payer, or if additional documentation is needed.
  4. Appeal or resubmit if needed Appeal with clinical justification for the place of service.
  5. Follow up Monitor the claim status and take additional action as needed based on the COB determination.
Appeal Guide

Appeal with clinical justification for the place of service.

Common RARC Pairings

The RARC code tells you exactly what triggered the OA-58:

RARC Description
N20 Service not consistent with POS Review secondary payer POS requirements →

How to Prevent OA-58

Also Filed As

The same CARC 58 may appear with different Group Codes:

CO-58 PR-58

Related Denial Codes

OA-5 — Procedure Code Inconsistent with Place of Service OA-19 — Workers' Compensation Claim OA-20 — Liability Carrier Responsible OA-21 — No-Fault Carrier Responsible OA-22 — Coordination of Benefits - Another Payer May Cover

Sources

  1. https://x12.org/codes/claim-adjustment-reason-codes
  2. https://revenuecyclemgmt.com/claim-adjustment-reason-codes/
  3. https://www.rivethealth.com/blog/carcs-rarcs-claim-adjustment-remittance-advice-codes
  4. Codes maintained by X12. Visit x12.org for official definitions.