CARC Code
229
Medicare Partial Charge Not Considered - 12X TOB
Medicare did not consider part of the billed charges because the claim was submitted with a Type of Bill code in the 12X range (typically inpatient interim bills). This code is used specifically in coordination of benefits situations where the secondary payer allows bypassing the primary claim submission.
contractualHow to resolve this denial
Review minimum billing requirements under contract; rebill at minimum threshold if applicable
- 1
Pull the original claim and review the denial reason and any RARC codes
- 2
Research the payer's policy for CARC 229 to understand the basis for denial
- 3
Gather supporting documentation addressing the denial reason
- 4
Submit a formal appeal with the documentation within the plan's appeal window
- 5
Follow up on the appeal within 30 days and document all communication
▶✓ 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 CO-229 — stats, related codes, appeal template
82%
Recovery Rate
7-14 days
Avg. Resolution
Medium
Difficulty
Rare
Frequency
Payer-Specific Notes
How major payers handle CARC 229 by specialty.
UnitedHealthcare
Review UHC's online claim status tool for additional detail on this adjustment.
Appeal Letter Template
Generic appeal template for CARC 229 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 229 indicating: "Partial charge amounts under contract do not meet minimum billing requirements.." 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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