835 Denial Combination
CO-182+N517
Contractual Obligation · Service-Line Level Adjustment
What This Combination Means
Invalid modifier was applied to HCPC for date of service billed
N/A
Appeal Success
7-14 days
Avg. Resolution
Medium
Difficulty
No
Appealable
Step-by-Step Resolution
Steps tailored specifically to this CO-182+N517 combination — not generic advice.
- 1
Correct claim line with appropriate required modifier and resubmit claim
Specialty Context
How CO-182+N517 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 182
NoridianInvalid modifier was applied to HCPC for date of service billed
How to Prevent CARC 182 Denials
- ✓
Use appropriate modifiers per appropriate Local Coverage Determination (LCD), LCD Policy Article
- ✓
Utilize the Noridian Modifier Lookup Tool to ensure proper modifiers are included on claim
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