CARC 136 Active

OA-136: Failure to Follow Prior Payer's Coverage Rules

TL;DR

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

Action
Verify & Resubmit
Who Pays
Depends
Appeal
No
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-136 Mean?

With OA (Other Adjustments), CARC 136 typically appears in a coordination of benefits (COB) context. The secondary payer denies the claim because the provider did not follow the primary payer's coverage rules or the information from the primary payer's adjudication is missing. 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 136 appears on a remittance when the payer applies an adjustment for failure to follow prior payer's coverage rules. Review the group code and any accompanying RARC codes to understand the full context of this adjustment.

Common scenarios that trigger this adjustment include: the secondary payer denies the claim because the provider did not follow the primary payer's coverage rules or the information from the primary payer's adjudication is missing; The secondary claim does not include the primary payer's Explanation of Benefits or payment details required for proper coordination of benefits processing; The primary payer denied the claim for a compliance reason (e.g., no auth), and the secondary payer will not pay because the primary's coverage rules were not met. The group code paired with CARC 136 determines who bears the financial responsibility — OA indicates a coordination of benefits or other payer adjustment, CO places it on the provider as a contractual obligation, PR shifts it to the patient.

Common Causes

Cause Frequency
Primary payer's coverage determination not followed The secondary payer denies the claim because the provider did not follow the primary payer's coverage rules or the information from the primary payer's adjudication is missing Most Common
Missing primary payer's EOB or payment information The secondary claim does not include the primary payer's Explanation of Benefits or payment details required for proper coordination of benefits processing Most Common
Primary payer denied due to provider non-compliance The primary payer denied the claim for a compliance reason (e.g., no auth), and the secondary payer will not pay because the primary's coverage rules were not met Common
Incorrect primary payer information on secondary claim The primary payer information submitted on the secondary claim does not match the actual primary payer's adjudication results Common

How to Resolve

  1. Review the coordination of benefits Examine the OA-136 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. Follow up Monitor the claim status and take additional action as needed based on the COB determination.
Do Not Appeal This Code

The secondary payer cannot process the claim until the primary payer's coverage rules are satisfied. Resolve any primary payer issues and resubmit with complete primary EOB information.

Common RARC Pairings

The RARC code tells you exactly what triggered the OA-136:

RARC Description
N381 The prior payer's coverage rules were not followed. Include the primary EOB and resolve any primary payer issues. Obtain the primary payer's EOB and resubmit with complete primary adjudication information →
N19 The primary payer's coverage rules must be satisfied before the secondary payer can process the claim Resolve any outstanding issues with the primary payer first →

How to Prevent OA-136

Also Filed As

The same CARC 136 may appear with different Group Codes:

CO-136 PR-136

Related Denial Codes

OA-100 — Payment Made to Patient/Insured OA-105 — Tax Withholding Amount OA-121 — Indemnification Adjustment OA-133 — Service Line Pending Further Review OA-137 — Regulatory Surcharges, Assessments, or Health-Related Taxes

Sources

  1. https://www.cms.gov/medicare/coordination-of-benefits
  2. https://www.aapc.com/resources/claim-adjustment-reason-code-carc
  3. https://www.mdclarity.com/denial-code/136
  4. Codes maintained by X12. Visit x12.org for official definitions.