CARC Code
23
Prior Payer Adjustment Impact
Another insurance company has already processed this claim and paid or adjusted it. This code shows how that previous payment affects what the current payer will pay.
cobHow to resolve this denial
Accept adjustment — reflects primary payer payment impact
- 1
Verify whether the patient has coverage through another insurance plan
- 2
Identify the correct payer order (primary, secondary, tertiary)
- 3
Submit or resubmit the claim to the appropriate payer
- 4
Include the primary payer's EOB when billing secondary insurance
- 5
Document coordination of benefits information in the patient account
▶✓ 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 OA-23 — stats, related codes, appeal template
99%
Recovery Rate
1-3 days
Avg. Resolution
Easy
Difficulty
Occasional
Frequency
Payer-Specific Notes
How major payers handle CARC 23 by specialty.
UnitedHealthcare
Review UHC's online claim status tool for additional detail on this adjustment.
Common 835 Combinations
CARC 23 most often appears with these Group Code + RARC combinations on 835 remittances.
Appeal Letter Template
Generic appeal template for CARC 23 denials.
We are submitting a formal appeal for claim [CLAIM_NUMBER] for patient [PATIENT_NAME], date of service [DOS]. This claim was denied/adjusted with CARC 23 indicating: "The impact of prior payer(s) adjudication including payments and/or adjustments.." We have reviewed the claim and are providing the attached documentation to support reconsideration. [SUPPORTING_DOCUMENTATION]. Please reconsider payment per the terms of our contract.
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