835 Denial Combination
CO-97+N95
Contractual Obligation · Service-Line Level Adjustment
Coding ErrorWhat This Combination Means
This combination indicates the service was denied because the provider's specialty or type is not eligible to bill this specific procedure code, and the benefit is considered bundled into another already-paid service. The payer is applying a contractual bundling rule while clarifying that the provider's credential type is not authorized to separately bill this component service regardless of bundling.
Financial Responsibility
provider writeoff
The provider must write off the denied amount per contractual obligation. The patient cannot be billed because the service benefit is included in payment for another procedure and the provider specialty is not permitted to bill it separately.
N/A
Appeal Success
Immediate (write-off)
Avg. Resolution
Easy
Difficulty
No
Appealable
Step-by-Step Resolution
Steps tailored specifically to this CO-97+N95 combination — not generic advice.
- 1
Verify the provider's enrolled specialty with the payer
Confirm whether the rendering provider's credentialed specialty type is permitted to bill the denied procedure code under the contract terms
- 2
Identify the primary service that includes this benefit
Review the ERA loop 2110 Service Payment Information REF segment to determine which already-adjudicated procedure includes payment for this denied service
- 3
Write off the contractual adjustment and update billing protocols
Post the adjustment as a contractual write-off and document that this procedure code cannot be billed separately by this provider specialty to prevent future denials
Specialty Context
How CO-97+N95 typically presents across different practice types.
Dental
Common when a general dentist bills a service restricted to oral surgeons or periodontists, such as complex surgical extractions or osseous surgery codes that are bundled into comprehensive treatment
Medical
Frequently occurs when mid-level providers (NPs, PAs) bill procedures restricted to physicians, or when a primary care provider bills a service bundled into a specialist's global surgical package
Behavioral Health
May appear when licensed counselors or social workers bill procedure codes restricted to psychiatrists or psychologists, or when therapy codes are bundled into comprehensive assessment services
Individual Code References
View the standalone definition for each code in this combination.
Medicare Contractor Guidance for CARC 97
FCSO + NoridianThere are a few scenarios that exist for denial reason code CO 97. Please review the associated remittance advice remark code (RARC) noted on the remittance advice for your claim and then refer to the specific resources and tips to prevent the denial.
How to Prevent CARC 97 Denials
- ✓
RARC M15 (Bundled services): If the procedure code has a 'b' status on the Medicare Physician Fee Schedule (MPFS) database, the service should not be billed to Medicare. Check your most frequently billed procedure codes on the First Coast fee schedule lookup tool — if status is 'b', do not bill Medicare.
- ✓
RARC M144 (Pre/post-operative care): If billing for split care, coordinate split-care billing activities with other provider(s) involved in the patient's care, and ensure the surgical code is billed before the services for post-operative care are billed.
- ✓
RARC N70 (Consolidated billing): Before providing services to a Medicare beneficiary, determine if a home health episode exists. Ask the beneficiary if they are receiving home health services under a home health plan of care. Always check beneficiary eligibility prior to submitting your claim via SPOT.
Need to resolve this denial?
Get a complete resolution plan with appeal guidance for this exact combination in seconds.
Generate a free resolution plan & appeal letter →Synthesized from official definitions — not from training data