CPT 91299
Global XXXUnlisted dx gi procedure
This code does not have a national work RVU on the current Physician Fee Schedule. Pricing may be carrier-determined, non-covered, or tracked via a separate methodology.
CPT 91299 Billing & Documentation Guide
CPT code 91299 (Unlisted dx gi procedure) is classified under Gastro Diagnostics with a global period indicator of XXX. This code uses the No national RVU payment methodology rather than standard RVU-based Physician Fee Schedule pricing. Refer to the methodology notice above for billing implications.
When billing 91299, ensure documentation supports medical necessity and the specific components required for the code's level of service. For E/M codes, document MDM (medical decision-making) elements: problems addressed, data reviewed, and risk. For procedural codes, document the indication, technique, and any complications. Always verify NCCI edits before bundling 91299 with related codes; this code has 1 PTP bundling relationships on file (see table below).
Payment Status & Global Period
Carrier-priced (MAC determines payment locally)
No global period (E/M and other non-procedural services)
MUE Limit (Medically Unlikely Edits)
Submitting more than 1 units of 91299 for the same patient on the same date triggers automatic line denial unless an appropriate modifier and supporting documentation justify the higher quantity.
NCCI Bundling Edits, CPT 91299
Procedure-to-procedure (PTP) edits. If you bill any of these codes with 91299 on the same date of service, review the modifier indicator and payer policy before submission.
| Partner Code | Relationship | Modifier Allowed | Rationale |
|---|---|---|---|
| 96523 | Column 1 (primary), can be billed with modifier | No | CPT Manual or CMS manual coding instruction |
Frequently Asked Questions, CPT 91299
What does CPT code 91299 mean? +
CPT code 91299 represents: Unlisted dx gi procedure. It's in the Gastro Diagnostics category with a global period of XXX.
What is the Medicare reimbursement for CPT 91299? +
This code does not have a national work RVU on the current Physician Fee Schedule. Pricing may be carrier-determined, non-covered, or tracked via a separate methodology.
What modifiers can I use with CPT 91299? +
Medicine section spans a wide range: therapy services use GP/GO/GN (PT/OT/SLP plans of care) and KX (above cap with documentation). Drug administration uses JW (waste) and JZ (no waste). Professional/technical split applies to some diagnostic codes.
What bundling edits apply to CPT 91299? +
This code has 1 NCCI PTP bundling relationships. See the NCCI Bundling section below for full list.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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