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ICD-10-PCS 2027 procedure code

031G09GBypass Intracranial Artery to Intracranial Artery with Autologous Venous Tissue, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Bypass Intracran Art to Intracran Art w Autol Vn, Open

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 031G09G

031G09G is the ICD-10-PCS code for a bypass procedure on the intracranial artery using an open approach with autologous venous tissue (qualifier: intracranial artery). In ICD-10-PCS, bypass means altering the route of passage of the contents of a tubular body part.

In plain terms, this corresponds to other (peripheral) vascular shunt or bypass, the ICD-9-CM procedure title it maps to (39.29).

For a different body part, codes include 031H09G (right common carotid artery), 031J09G (left common carotid artery), 031S09G (right temporal artery) and 031T09G (left temporal artery).

With a different device, use 031G0AG (autologous arterial tissue), 031G0JG (synthetic substitute), 031G0KG (nonautologous tissue substitute) and 031G0ZG (no device).

It is an operating-room procedure in the MS-DRG logic for DRG 252 (Other Vascular Procedures with MCC), DRG 253 (Other Vascular Procedures with CC) and DRG 254 (Other Vascular Procedures without CC/MCC), under the surgical category “Other Vascular Procedures”.

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
1Bypass

Altering the route of passage of the contents of a tubular body part

Rerouting contents of a body part to a downstream area of the normal route, to a similar route and body part, or to an abnormal route and dissimilar body part. Includes one or more anastomoses, with or without the use of a device

Includes: Coronary artery bypass, colostomy formation

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
0Open

Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure

6. Device
9Autologous Venous Tissue
7. Qualifier
GIntracranial Artery

Other versions of this procedure

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

ICD-9-CM equivalent

Converter →
  • 39.29Other (peripheral) vascular shunt or bypassapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 031G09G

Is 031G09G a valid ICD-10-PCS code for 2027?

Yes. 031G09G is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 031G09G an O.R. procedure?

Yes. 031G09G is an O.R. procedure in MS-DRG v44.0.

What DRG does 031G09G group to?

Depending on the principal diagnosis, 031G09G can group to MS-DRG 252, MS-DRG 253 and MS-DRG 254.

What is the ICD-9 procedure code for 031G09G?

The CMS GEMs map 031G09G to ICD-9-CM 39.29 (Other (peripheral) vascular shunt or bypass).