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HCPCS G0453 · Level II · G code

G0453: Continuous intraoperative neurophysiology monitoring, 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); 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); Medicare Coverage Database LCD export: MCD release October 8, 2026 (effective October 4, 2026). Next CMS release: January 1, 2027 (quarterly update) for the HCPCS Level II file 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; weekly, every Thursday for the Medicare Coverage Database LCD export.

Key facts for G0453

Medicare payment
$27.39
PFS facility, national
Coverage code
C
carrier judgment, so the Medicare contractor decides coverage
Practitioner MUE
40
MAI 3
OPPS status
SI N
Items and Services packaged into APC rates
NCCI PTP pairs
748
745 hospital outpatient
LCDs and articles
2 / 2
add-on code

TL;DR

HCPCS Level II G0453 reads "Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure)" in the October 2026 file; it dates from 2013. Medicare's October 2026 physician fee schedule pays G0453 no non-facility amount non-facility and $27.39 facility nationally, from 0.60 work, 0.17 practice-expense and 0.05 malpractice RVUs at the $33.4009 conversion factor. Qualifying APM participants get $27.53 at $33.5675. MUE limits for G0453: practitioner 40 (MAI 3, Clinical: CMS Workgroup); hospital outpatient 10 (MAI 3, Clinical: CMS Workgroup). G0453 is an add-on code (NCCI edit type 1): Medicare pays it only on a claim that also carries one of 28 primary codes such as 95822, 95860, 95861, 95863. In the NCCI PTP files v323r0 G0453 appears in 742 practitioner pairs as column 2 and 6 as column 1 (most often with 00104, 00210, 00211), and in 742 hospital outpatient pairs as column 2 and 3 as column 1. 2 active LCDs and 2 billing and coding articles list G0453 across 8 states plus DC: L34623 (Intraoperative Neurophysiological Testing), L35003 (Intraoperative Neurophysiological Testing), A56722, A57604. OPPS status indicator N: Items and Services packaged into APC rates. HCPCS record: BETOS T2D (other tests - other); pricing indicator 13; type of service 1 (medical care). Nearby codes: G0452, G0454, G0451, G0448.

G0453 descriptor and code status

The October 2026 HCPCS Level II file describes G0453 as “Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure)”. It sits in the G section (procedures and professional services, temporary), listed with the other G codes. Although searches often call it the "G0453 CPT code", G0453 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 G0453
FieldValue
Short descriptorCont intraop neuro monitor
Added to HCPCS2013-01-01
Last actionN (no maintenance), effective 2013-01-01
Coverage codeC: carrier judgment, so the Medicare contractor decides coverage
Pricing indicator13: physician fee schedule, priced by the contractor
BETOS categoryT2D: other tests - other
Type of service1: medical care

Medicare payment for G0453

Medicare's October 2026 physician fee schedule pays G0453 no non-facility amount non-facility and $27.39 facility nationally, from 0.60 work, 0.17 practice-expense and 0.05 malpractice RVUs at the $33.4009 conversion factor. Qualifying APM participants get $27.53 at $33.5675. 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 A: active: paid separately under the physician fee schedule when covered. Global period XXX (global surgery concept does not apply); PC/TC indicator 0 (physician service; the professional/technical split does not apply).

PFS relative values and national payment for G0453
ComponentNon-facilityFacility
Work RVU0.600.60
Practice expense RVUNA0.17
Malpractice RVU0.050.05
Total RVUsNA0.82
National payment (CF $33.4009)n/a$27.39
Qualifying APM participant (CF $33.5675)n/a$27.53
  • Multiple procedures (modifier 51): no multiple-procedure reduction
  • Bilateral (modifier 50): 150% bilateral adjustment does not apply
  • Assistant at surgery: assistant at surgery paid only with documentation; co-surgeons: co-surgeons not permitted; team surgery: team surgeons not permitted
  • Physician supervision of diagnostic procedures: supervision concept does not apply

Hospital outpatient (OPPS Addendum B)

Status indicator N (Items and Services packaged into APC rates), with no separate OPPS payment rate.

Medically Unlikely Edits for G0453

MUE limits for G0453: practitioner 40 (MAI 3, Clinical: CMS Workgroup); hospital outpatient 10 (MAI 3, Clinical: CMS Workgroup). The practitioner MUE is a date-of-service clinical edit: units above the limit deny but can be paid on appeal with documentation.

MUE values for G0453 by setting
SettingMUE (units/DOS)MAICMS rationale
Practitioner services403 Date of Service Edit: ClinicalClinical: CMS Workgroup
Facility outpatient hospital103 Date of Service Edit: ClinicalClinical: CMS Workgroup

The MUE lookup for G0453 shows every setting next to any other code on the same claim.

NCCI edits and add-on rules

In the practitioner PTP file v323r0, G0453 is the column-2 (bundled) code in 742 active pairs, 7% of which allow a modifier and the column-1 code in 6 (33% modifier-allowed); 83 earlier pairs have been deleted. CMS's most frequent rationale for the bundled pairs: Standards of medical/surgical practice.

Column-1 codes most often paired with G0453 (practitioner)
Column-1 codePairs
00104 (CPT; descriptor licensed by AMA)1
00210 (CPT; descriptor licensed by AMA)1
00211 (CPT; descriptor licensed by AMA)1
00212 (CPT; descriptor licensed by AMA)1
00214 (CPT; descriptor licensed by AMA)1
00215 (CPT; descriptor licensed by AMA)1
00216 (CPT; descriptor licensed by AMA)1
00218 (CPT; descriptor licensed by AMA)1
Column-2 codes bundled into G0453 (practitioner)
Column-2 codePairs
36591 (CPT; descriptor licensed by AMA)1
36592 (CPT; descriptor licensed by AMA)1
95872 (CPT; descriptor licensed by AMA)1
95875 (CPT; descriptor licensed by AMA)1
95941 (CPT; descriptor licensed by AMA)1
96523 (CPT; descriptor licensed by AMA)1

In the hospital outpatient PTP file v323r0, G0453 is the column-2 (bundled) code in 742 active pairs, 100% of which allow a modifier and the column-1 code in 3 (67% modifier-allowed); 83 earlier pairs have been deleted. CMS's most frequent rationale for the bundled pairs: Standards of medical/surgical practice.

Column-1 codes most often paired with G0453 (hospital outpatient)
Column-1 codePairs
00104 (CPT; descriptor licensed by AMA)1
00210 (CPT; descriptor licensed by AMA)1
00211 (CPT; descriptor licensed by AMA)1
00212 (CPT; descriptor licensed by AMA)1
00214 (CPT; descriptor licensed by AMA)1
00215 (CPT; descriptor licensed by AMA)1
00216 (CPT; descriptor licensed by AMA)1
00218 (CPT; descriptor licensed by AMA)1
Column-2 codes bundled into G0453 (hospital outpatient)
Column-2 codePairs
95872 (CPT; descriptor licensed by AMA)1
95875 (CPT; descriptor licensed by AMA)1
95941 (CPT; descriptor licensed by AMA)1

G0453 is an add-on code: it is payable only with a primary service on the same claim (95822, 95860, 95861, 95863, 95864, 95865, 95866, 95867, 95868, 95869, 95870, 95907, and others). CPT primary codes are shown as numbers only.

Pair counts show exposure, not the answer for one claim. Check G0453 against a second code to see whether the pair bundles and whether a modifier can separate the services.

Medicare coverage policies for G0453

2 active Local Coverage Determinations and 2 billing and coding articles list G0453. Each applies only in its contractor's jurisdiction, and the article carries the diagnosis codes that support the item or service.

Billing and Coding Articles listing G0453
ArticleTitleContractor(s)Related LCD
A56722Billing and Coding: Intraoperative Neurophysiological TestingNovitas Solutions, Inc.L35003
A57604Billing and Coding: Intraoperative Neurophysiological TestingWisconsin Physicians Service Insurance CorporationL34623

Denials to expect on G0453

CARC 50 · N115

the diagnosis or documentation does not meet the LCD or billing article that lists G0453

CARC 151 · N362

units of G0453 exceed the practitioner MUE of 40 per date of service

CARC 4

the modifier reported is inconsistent with the code

CARC 16

the claim lacks the description, invoice or pricing detail a contractor-priced code needs

Where QuickIntell fits for G0453 claims

QuickCode supports qualified coder review of units, modifiers and NCCI pairs for G0453 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 G0453

What does HCPCS code G0453 describe?

"Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure)" (short descriptor "Cont intraop neuro monitor"), in the G section (procedures and professional services, temporary). Added 2013-01-01.

Is G0453 a CPT code?

No: CMS maintains G0453 in HCPCS Level II, while the AMA maintains CPT. People do search "G0453 CPT code", and it goes in the same procedure-code field.

What does Medicare pay for G0453?

Medicare's October 2026 physician fee schedule pays G0453 no non-facility amount non-facility and $27.39 facility nationally, from 0.60 work, 0.17 practice-expense and 0.05 malpractice RVUs at the $33.4009 conversion factor. Qualifying APM participants get $27.53 at $33.5675.

Is G0453 an add-on code?

G0453 is an add-on code (NCCI edit type 1): Medicare pays it only on a claim that also carries one of 28 primary codes such as 95822, 95860, 95861, 95863.

How many units of G0453 can be billed per day?

MUE limits for G0453: practitioner 40 (MAI 3, Clinical: CMS Workgroup); hospital outpatient 10 (MAI 3, Clinical: CMS Workgroup). For the practitioner MUE (MAI 3), units above 40 deny for the day but can be paid on appeal with documentation; denials arrive as CARC 151.

Does Medicare cover G0453?

Coverage code C (carrier judgment, so the Medicare contractor decides coverage). 2 active LCDs and 2 billing and coding articles list G0453 across 8 states plus DC: L34623 (Intraoperative Neurophysiological Testing), L35003 (Intraoperative Neurophysiological Testing), A56722, A57604.

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.