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HCPCS G0432 · Level II · G code

G0432: Infectious agent antibody detection by enzyme immunoassay (eia) technique, HCPCS Level II G code

Compiled from CMS files by the QuickIntell RCM Editorial Team · Data effective · Method: reference methodology · Report a data correction

Data currency: HCPCS Level II file: October 2026 (effective October 1, 2026); PFS relative value file: RVU26D, released August 26, 2026 (effective October 1, 2026); Clinical Laboratory Fee Schedule: 26CLABQ4 (CY2026 Q4) (effective October 1, 2026); NCCI MUE tables: 2026 Q4 (effective October 1, 2026); NCCI PTP edits: v323r0 (2026 Q4) (effective October 1, 2026); OPPS Addendum B: October 2026 (effective October 1, 2026). Next CMS release: January 1, 2027 (quarterly update) for the HCPCS Level II file and Clinical Laboratory Fee Schedule and NCCI MUE tables and NCCI PTP edits and OPPS Addendum B; RVU27A with the CY2027 PFS final rule, effective January 1, 2027 for the PFS relative value file.

Key facts for G0432

Medicare payment
$19.57
CLFS national limitation amount
Coverage code
C
carrier judgment, so the Medicare contractor decides coverage
Practitioner MUE
1
MAI 2
OPPS status
SI A
Services not paid under OPPS; paid under fee schedule or other payment system
NCCI PTP pairs
6
6 hospital outpatient
LCDs and articles
0 / 0

TL;DR

HCPCS Level II G0432 reads "Infectious agent antibody detection by enzyme immunoassay (eia) technique, hiv-1 and/or hiv-2, screening" in the October 2026 file; it dates from 2009. The 2026 Q4 clinical laboratory fee schedule pays G0432 $19.57 (national limitation amount). MUE limits for G0432: practitioner 1 (MAI 2, Code Descriptor / CPT Instruction); hospital outpatient 1 (MAI 2, Code Descriptor / CPT Instruction). In the NCCI PTP files v323r0 G0432 appears in 3 practitioner pairs as column 2 and 3 as column 1 (most often with 87389, 87806, G0475), and in 3 hospital outpatient pairs as column 2 and 3 as column 1. No current LCD or billing article lists G0432; its HCPCS coverage code is C (carrier judgment, so the Medicare contractor decides coverage). OPPS status indicator A: Services not paid under OPPS; paid under fee schedule or other payment system. HCPCS record: BETOS T1H (lab tests - other (non-Medicare fee schedule)); pricing indicator 21; type of service 9 (other medical items or services). Nearby codes: G0433, G0429, G0427, G0426.

G0432 descriptor and code status

The October 2026 HCPCS Level II file describes G0432 as “Infectious agent antibody detection by enzyme immunoassay (eia) technique, hiv-1 and/or hiv-2, screening”. It sits in the G section (procedures and professional services, temporary), listed with the other G codes. Although searches often call it the "G0432 CPT code", G0432 is a HCPCS Level II code maintained by CMS, not an AMA CPT code; both go in the same procedure-code field on the claim.

HCPCS file attributes of G0432
FieldValue
Short descriptorEia hiv-1/hiv-2 screen
Added to HCPCS2009-12-08
Last actionN (no maintenance), effective 2010-10-01
Coverage codeC: carrier judgment, so the Medicare contractor decides coverage
Pricing indicator21: clinical lab fee schedule, subject to the national limitation amount
BETOS categoryT1H: lab tests - other (non-Medicare fee schedule)
Type of service9: other medical items or services

Medicare payment for G0432

The 2026 Q4 clinical laboratory fee schedule pays G0432 $19.57 (national limitation amount). The amounts below are national figures from the October 2026 CMS files; the contractor applies the locality, rural or state adjustment and the beneficiary's cost sharing.

Physician fee schedule (RVU26D)

Status X: statutory exclusion: not a physician service under the fee schedule. Global period XXX (global surgery concept does not apply); PC/TC indicator 9 (professional/technical concept does not apply).

Clinical Laboratory Fee Schedule (26CLABQ4)

G0432 is paid at $19.57 (national limitation amount). Laboratory fee schedule payments carry no beneficiary coinsurance or deductible.

Hospital outpatient (OPPS Addendum B)

Status indicator A (Services not paid under OPPS; paid under fee schedule or other payment system), with no separate OPPS payment rate.

Medically Unlikely Edits for G0432

MUE limits for G0432: practitioner 1 (MAI 2, Code Descriptor / CPT Instruction); hospital outpatient 1 (MAI 2, Code Descriptor / CPT Instruction). The practitioner MUE is a date-of-service policy edit: units above the limit deny even when split across lines, and appeals rarely succeed.

MUE values for G0432 by setting
SettingMUE (units/DOS)MAICMS rationale
Practitioner services12 Date of Service Edit: PolicyCode Descriptor / CPT Instruction
Facility outpatient hospital12 Date of Service Edit: PolicyCode Descriptor / CPT Instruction

The MUE lookup for G0432 shows every setting next to any other code on the same claim.

NCCI edits and add-on rules

In the practitioner PTP file v323r0, G0432 is the column-2 (bundled) code in 3 active pairs, 0% of which allow a modifier and the column-1 code in 3 (67% modifier-allowed); 0 earlier pairs have been deleted. CMS's most frequent rationale for the bundled pairs: Mutually exclusive procedures.

Column-1 codes most often paired with G0432 (practitioner)
Column-1 codePairs
87389 (CPT; descriptor licensed by AMA)1
87806 (CPT; descriptor licensed by AMA)1
G0475 Hiv combination assay1
Column-2 codes bundled into G0432 (practitioner)
Column-2 codePairs
86701 (CPT; descriptor licensed by AMA)1
86702 (CPT; descriptor licensed by AMA)1
86703 (CPT; descriptor licensed by AMA)1

In the hospital outpatient PTP file v323r0, G0432 is the column-2 (bundled) code in 3 active pairs, 0% of which allow a modifier and the column-1 code in 3 (67% modifier-allowed); 0 earlier pairs have been deleted. CMS's most frequent rationale for the bundled pairs: Mutually exclusive procedures.

Column-1 codes most often paired with G0432 (hospital outpatient)
Column-1 codePairs
87389 (CPT; descriptor licensed by AMA)1
87806 (CPT; descriptor licensed by AMA)1
G0475 Hiv combination assay1
Column-2 codes bundled into G0432 (hospital outpatient)
Column-2 codePairs
86701 (CPT; descriptor licensed by AMA)1
86702 (CPT; descriptor licensed by AMA)1
86703 (CPT; descriptor licensed by AMA)1

G0432 is neither an add-on code nor a designated primary code in the 2026 Q4 NCCI add-on edit file.

Pair counts show exposure, not the answer for one claim. Check G0432 against a second code to see whether the pair bundles and whether a modifier can separate the services.

Medicare coverage policies for G0432

No current LCD or billing and coding article lists G0432. The HCPCS coverage code C means carrier judgment, so the Medicare contractor decides coverage, and any National Coverage Determination for the service still applies.

Denials to expect on G0432

CARC 50 · N115

the service is not reasonable and necessary for the diagnosis on the claim

CARC 151 · N362

units of G0432 exceed the practitioner MUE of 1 per date of service

CARC 4

the modifier reported is inconsistent with the code

CARC 16

the claim lacks information needed to adjudicate the line, such as an order, NPI or required modifier

Where QuickIntell fits for G0432 claims

QuickCode supports qualified coder review of units, modifiers and NCCI pairs for G0432 before the claim leaves, and QuickRCM carries claim readiness and the denial follow-up when an edit or coverage policy is missed.

See QuickCode for coder reviewSee QuickRCM for denial follow-upBook a meeting

Frequently asked questions: HCPCS G0432

What does HCPCS code G0432 describe?

"Infectious agent antibody detection by enzyme immunoassay (eia) technique, hiv-1 and/or hiv-2, screening" (short descriptor "Eia hiv-1/hiv-2 screen"), in the G section (procedures and professional services, temporary). Added 2009-12-08; last action N (no maintenance) effective 2010-10-01.

Is G0432 a CPT code?

No: CMS maintains G0432 in HCPCS Level II, while the AMA maintains CPT. People do search "G0432 CPT code", and it goes in the same procedure-code field.

What does Medicare pay for G0432?

The 2026 Q4 clinical laboratory fee schedule pays G0432 $19.57 (national limitation amount).

How many units of G0432 can be billed per day?

MUE limits for G0432: practitioner 1 (MAI 2, Code Descriptor / CPT Instruction); hospital outpatient 1 (MAI 2, Code Descriptor / CPT Instruction). For the practitioner MUE (MAI 2), units above 1 deny for the whole day as a policy limit; denials arrive as CARC 151.

Does Medicare cover G0432?

No current LCD or billing article lists G0432; its HCPCS coverage code is C (carrier judgment, so the Medicare contractor decides coverage).

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Disclaimer

This page is an operational reference compiled from CMS publications: the HCPCS Level II file, the physician, DMEPOS and clinical laboratory fee schedules, OPPS and ASC addenda, NCCI MUE, PTP and add-on edit tables and the Medicare Coverage Database. Amounts are Medicare national figures before locality and state adjustment; Medicaid and commercial payers set their own. CPT codes are shown as numbers only; CPT descriptors are copyright AMA. Nothing here is legal, clinical or billing advice.

Found a figure that does not match the CMS file? Report a data correction with the CMS file and the value you expected; the request reaches the editorial team through the contact form.