CARC129ReferenceCurrentVerified Aug 15, 2026CARC 129
AR Guide explanation
What it means
Prior processing information appears incorrect.
AR Guide knowledge
Common denial category
AR Guide knowledge
Common causes
- Prior payment or adjustment was calculated incorrectly
- Prior claim processed with wrong data
AR Guide knowledge
What AR should verify
- Review the prior claim's adjudication details
- Identify what was incorrect in the prior processing
AR Guide knowledge
Recommended action
- Contact the payer with the prior claim details and request correction
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.