Procedure-to-procedure (PTP) edits
PTP edits flag two codes that CMS does not want billed together without an appropriate modifier when a distinct service is documented. Blindly adding modifier 59 to clear an edit is a compliance risk.
Medically Unlikely Edits (MUEs)
MUEs cap how many units of a code are typically billed. Exceeding them without documentation invites denials. AI can warn; a coder still judges the record.
Hospital vs practitioner files
CMS publishes different NCCI files by setting. Using the wrong file in software is an implementation defect, not a “smarter model.”
Frequently asked questions
Who publishes NCCI?+
CMS. See the National Correct Coding Initiative pages in citations.
Can AI override NCCI?+
No. Overrides belong to your coding policy with documented reasons in the audit trail.