835 Denial Combination
CO-58
Contractual Obligation · Service-Line Level Adjustment
What This Combination Means
The place of service is inappropriate for the service billed. The procedure cannot be reimbursed in the setting where it was performed.
72%
Appeal Success
7-14 days
Avg. Resolution
Medium
Difficulty
Yes
Appealable
Step-by-Step Resolution
Steps tailored specifically to this CO-58 combination — not generic advice.
- 1
Verify the place of service code matches the actual location of service.
- 2
Check payer policy for allowable POS codes for this CPT/HCPCS code.
- 3
If a POS error was made, correct and resubmit as a corrected claim.
- 4
If the POS is correct but denied, appeal with clinical documentation supporting why this setting was appropriate.
Specialty Context
How CO-58 typically presents across different practice types.
Dental
Verify the place of service is inappropriate for the service billed per your dental plan contract and documentation requirements.
Medical
Confirm the place of service is inappropriate for the service billed against payer policy and submit corrected claim as needed.
Behavioral Health
Apply behavioral health parity rules and confirm the place of service is inappropriate for the service billed per MHPAEA standards.
Individual Code References
View the standalone definition for each code in this combination.
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