Denial code CO-95: Plan procedures not followed
A procedural requirement of the plan — referral, notification, network routing — was not satisfied before the service.
Plan procedures not followed.
What CO-95 actually means
The plan imposes an administrative process and it was not followed. Unlike CO-197, which is specifically about authorization, CO-95 covers the broader set: missing referrals in gatekeeper plans, failure to notify on admission, use of a non-network facility for a covered service. The service itself is typically covered; the process failure is what blocked payment.
Why this denial happens
- A required referral from the primary care provider was not obtained.
- The plan was not notified of an admission within the required window.
- A covered service was performed at a facility the plan does not permit.
- A required care-management or case-management step was skipped.
How to resolve a CO-95 denial
- Identify the specific procedural requirement that was missed.
- Obtain the referral or notification retroactively where the plan permits it.
- Appeal with documentation of urgency or of good-faith compliance where applicable.
How to prevent it
- Document each plan’s procedural requirements alongside its authorization rules.
- Verify referral requirements at scheduling for gatekeeper plans.
Frequently asked
What does denial code CO-95 mean?
A procedural requirement of the plan — referral, notification, network routing — was not satisfied before the service. The X12 description reads: "Plan procedures not followed."
How do I fix a CO-95 denial?
Identify the specific procedural requirement that was missed. Obtain the referral or notification retroactively where the plan permits it. Appeal with documentation of urgency or of good-faith compliance where applicable.
Can CO-95 be billed to the patient?
Generally no. The recommended path for this code is "appeal or correct and resubmit" — check your payer agreement before transferring any balance to the patient.
Related denial codes
Related billing terms
See how much CO-95 is costing you
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General revenue-cycle guidance, not legal, coding, or payer-specific advice. Claim adjustment reason codes are maintained by X12 and are revised periodically; payer policy and your provider agreement govern in any specific case. Always read the remark codes transmitted with the denial — they frequently carry the detail this code does not.