Denial code CO-49: Routine or preventive exam not covered
The plan does not pay for this routine service, or it was billed with a non-preventive code.
At a glance
| Code | CO-49 (group CO, reason 49) |
| Who owes it | Contractual obligation: The provider must write this off. The patient cannot be billed for it. |
| Type | Not covered |
| Worth appealing? | Usually yes, once the cause is fixed |
How to fix it
- Check if the visit was preventive (99381-99397) or a problem visit.
- Correct coding or bill the patient if they signed a waiver.
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Start free for 14 daysFrequently asked questions
What does denial code CO-49 mean?
The plan does not pay for this routine service, or it was billed with a non-preventive code.
How do I fix a CO-49 denial?
1. Check if the visit was preventive (99381-99397) or a problem visit. 2. Correct coding or bill the patient if they signed a waiver.
Should I appeal a CO-49 denial?
Usually yes, or send a corrected claim. CO-49 denials are often recoverable once the cause is fixed. Check the payer's appeal deadline (often 60 to 180 days, 120 days for Medicare redeterminations).
Can I bill the patient for CO-49?
No. With group code CO the amount is not the patient's responsibility and must be written off unless it is overturned.
Plain-English summary for billing staff, not the official code text. See x12.org/codes for the official wording, and always follow the payer's own policy.