CARC210ReferenceCurrentVerified Aug 15, 2026CARC 210
AR Guide Workflow
Authorization
The service required prior authorization, precertification, or pre-treatment review that was missing, expired, or did not cover what was billed.
AR Guide explanation
What it means
Payment was adjusted because pre-certification or authorization was not received in a timely fashion.
AR Guide knowledge
Common denial category
Authorization — The service required prior authorization, precertification, or pre-treatment review that was missing, expired, or did not cover what was billed.
AR Guide knowledge
Common causes
- Authorization obtained late
- Authorization request submitted after the service
AR Guide knowledge
What AR should verify
- Check when the authorization was requested vs. the service date
- Review the payer's authorization timing requirements
AR Guide knowledge
Recommended action
- Appeal with proof of timely authorization request where applicable
- For future claims, obtain authorization well before the service
About this guidance: Note
AR Guide knowledge is general reference content written by our team — it is not payer-specific policy and never replaces the payer’s documentation or your contract. Always confirm specifics with the payer.