ICD-10-PCS 2027 procedure code
037G4ZZDilation of Intracranial Artery, Percutaneous Endoscopic Approach
Short description: Dilation of Intracranial Artery, Perc Endo Approach
Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data
About 037G4ZZ
037G4ZZ is the ICD-10-PCS code for a dilation procedure on the intracranial artery using a percutaneous endoscopic approach. In ICD-10-PCS, dilation means expanding an orifice or the lumen of a tubular body part.
In plain terms, this corresponds to procedure on single vessel and percutaneous angioplasty of intracranial vessel(s), the ICD-9-CM procedure titles it maps to (00.40 and 00.62).
For a different body part, codes include 03704ZZ (right internal mammary artery), 03714ZZ (left internal mammary artery), 03724ZZ (innominate artery), 03734ZZ (right subclavian artery), 03744ZZ (left subclavian artery), 03754ZZ (right axillary artery) and 23 more.
The same procedure with a different approach is coded 037G0ZZ (open) and 037G3ZZ (percutaneous).
With a different device, use 037G44Z (intraluminal device, drug-eluting), 037G45Z (intraluminal device, drug-eluting, two), 037G46Z (intraluminal device, drug-eluting, three), 037G47Z (intraluminal device, drug-eluting, four or more), 037G4DZ (intraluminal device), 037G4EZ (intraluminal device, two) and 2 more.
It is an operating-room procedure in the MS-DRG logic for DRG 020 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with MCC), DRG 021 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with CC), DRG 022 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage without CC/MCC), DRG 023 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator), DRG 024 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC) and DRG 025 (Craniotomy and Endovascular Intracranial Procedures with MCC), under the surgical categories “Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage”, “Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis”, “Craniotomy and endovascular intracranial procedures” and 3 more.
It has been valid since ICD-10-PCS took effect on October 1, 2015.
What each character means
- 1. Section
- 0Medical and Surgical
- 2. Body System
- 3Upper Arteries
- 3. Operation
- 7Dilation
Expanding an orifice or the lumen of a tubular body part
The orifice can be a natural orifice or an artificially created orifice. Accomplished by stretching a tubular body part using intraluminal pressure or by cutting part of the orifice or wall of the tubular body part
Includes: Percutaneous transluminal angioplasty, internal urethrotomy
- 4. Body Part
- GIntracranial Artery
Includes: Anterior cerebral artery; Anterior choroidal artery; Anterior communicating artery; Basilar artery; Circle of Willis; Internal carotid artery, intracranial portion; Middle cerebral artery; Middle meningeal artery, intracranial portion; Ophthalmic artery; Posterior cerebral artery; Posterior communicating artery; Posterior inferior cerebellar artery (PICA); Vertebral artery, intracranial portion
- 5. Approach
- 4Percutaneous Endoscopic
Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
- 03704ZZInternal Mammary Artery, Right
- 03714ZZInternal Mammary Artery, Left
- 03724ZZInnominate Artery
- 03734ZZSubclavian Artery, Right
- 03744ZZSubclavian Artery, Left
- 03754ZZAxillary Artery, Right
- 03764ZZAxillary Artery, Left
- 03774ZZBrachial Artery, Right
- 03784ZZBrachial Artery, Left
- 03794ZZUlnar Artery, Right
- 037A4ZZUlnar Artery, Left
- 037B4ZZRadial Artery, Right
Different approach
Different device
- 037G44ZIntraluminal Device, Drug-eluting
- 037G45ZIntraluminal Device, Drug-eluting, Two
- 037G46ZIntraluminal Device, Drug-eluting, Three
- 037G47ZIntraluminal Device, Drug-eluting, Four or More
- 037G4DZIntraluminal Device
- 037G4EZIntraluminal Device, Two
- 037G4FZIntraluminal Device, Three
- 037G4GZIntraluminal Device, Four or More
MS-DRG v44.0 grouping
All DRGs →Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.
MDC 01 · Diseases and Disorders of the Nervous System · Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage
MDC 01 · Diseases and Disorders of the Nervous System · Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis
MDC 01 · Diseases and Disorders of the Nervous System · Craniotomy and endovascular intracranial procedures
MDC 05 · Diseases and Disorders of the Circulatory System · Other Vascular Procedures
MDC 21 · Injuries, Poisonings and Toxic Effects of Drugs · Other O.R. Procedures for Injuries
MDC 24 · Multiple Significant Trauma · Other O.R. Procedures for Multiple Significant Trauma
ICD-9-CM equivalent
Converter →- 00.40Procedure on single vesselapproximate, combination
- 00.62Percutaneous angioplasty of intracranial vessel(s)approximate, combination
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about 037G4ZZ
Is 037G4ZZ a valid ICD-10-PCS code for 2027?
- Yes. 037G4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 037G4ZZ an O.R. procedure?
- Yes. 037G4ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 037G4ZZ group to?
- Depending on the principal diagnosis, 037G4ZZ can group to MS-DRG 020, MS-DRG 021, MS-DRG 022, MS-DRG 023, MS-DRG 024 and MS-DRG 025.
What is the ICD-9 procedure code for 037G4ZZ?
- The CMS GEMs map 037G4ZZ to ICD-9-CM 00.40 (Procedure on single vessel) and 00.62 (Percutaneous angioplasty of intracranial vessel(s)).