CPT 2026 · Pathology/Lab

CPT 83045

Global XXX

Hgb methemoglobin qual

Effective 2026-04-01 Conv. factor $33.4009

No national RVU

Payment Methodology

Status Indicator

NCCI Partners

XXX

Global Period

No national RVU

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 83045 Billing & Documentation Guide

CPT code 83045 (Hgb methemoglobin qual) is classified under Pathology/Lab 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 83045, 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 83045 with related codes; this code has 2 PTP bundling relationships on file (see table below).

Payment Status & Global Period

CMS Status Indicator

Statutory exclusion

Global Period

XXX

No global period (E/M and other non-procedural services)

MUE Limit (Medically Unlikely Edits)

Max units per beneficiary per date of service

Rationale: Nature of Service/Procedure

Adjudication: Date of Service (Clinical)

Source: CMS NCCI MUE Practitioner Services, effective 2026-04-01.

Submitting more than 1 units of 83045 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 83045

Procedure-to-procedure (PTP) edits. If you bill any of these codes with 83045 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
88741	Column 2 (secondary), bundled into primary	Yes	Mutually exclusive procedures

Frequently Asked Questions, CPT 83045

What does CPT code 83045 mean? +

CPT code 83045 represents: Hgb methemoglobin qual. It's in the Pathology/Lab category with a global period of XXX.

What is the Medicare reimbursement for CPT 83045? +

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 83045? +

Pathology and laboratory use modifier 90 (reference/outside lab), 91 (repeat clinical diagnostic test same day), 92 (alternative laboratory platform), and QW (CLIA waived test). Surgical pathology splits between 26 and TC where applicable.

What bundling edits apply to CPT 83045? +

This code has 2 NCCI PTP bundling relationships. See the NCCI Bundling section below for full list.