835 Denial Combination
CO-109+N104
Contractual Obligation · Service-Line Level Adjustment
What This Combination Means
Claim was submitted to incorrect Jurisdiction Claim must be submitted to the Jurisdiction listed as the beneficiary’s permanent address with the Social Security Administration
N/A
Appeal Success
7-14 days
Avg. Resolution
Medium
Difficulty
No
Appealable
Step-by-Step Resolution
Steps tailored specifically to this CO-109+N104 combination — not generic advice.
- 1
Submit claim to correct Jurisdiction listed as beneficiary’s permanent address with the Social Security Administration. This can be verified in the Noridian Medicare Portal
- 2
Determine which DME MAC jurisdiction the claim is to be submitted to, based on the permanent address or should it be billed to the Part B Mac Jurisdiction
Specialty Context
How CO-109+N104 typically presents across different practice types.
Dental
Medical
Behavioral Health
Individual Code References
View the standalone definition for each code in this combination.
Medicare Contractor Guidance for CARC 109
FCSO + NoridianThe first step in avoiding the reason code CO 109 is to check what type of insurance coverage the patient has and verify their eligibility status prior to submitting claims to Medicare. If the claim has been filed to Medicare in error, it will be returned as an unprocessable claim and will need to be resubmitted to the correct payer / contractor for payment.
How to Prevent CARC 109 Denials
- ✓
Check what type of insurance coverage the patient has and verify their eligibility status prior to submitting claims to Medicare.
- ✓
Check beneficiary eligibility prior to submitting claims to Medicare.
- ✓
Evaluate the accompanying remittance advice remark code (RARC) to determine the correct payer / contractor of service.
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