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ICD-10-PCS 2027 procedure code

00W00YZRevision of Other Device in Brain, Open Approach

✓ Valid for 2027O.R. procedure

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 00W00YZ

00W00YZ is the ICD-10-PCS code for a revision procedure on the brain using an open approach with other device. In ICD-10-PCS, revision means correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device.

In plain terms, this corresponds to other incision of brain, the ICD-9-CM procedure title it maps to (01.39).

For a different body part, codes include 00W60YZ (cerebral ventricle), 00WE0YZ (cranial nerve), 00WU0YZ (spinal canal) and 00WV0YZ (spinal cord).

The same procedure with a different approach is coded 00W03YZ (percutaneous) and 00W04YZ (percutaneous endoscopic).

With a different device, use 00W000Z (drainage device), 00W002Z (monitoring device), 00W003Z (infusion device), 00W007Z (autologous tissue substitute), 00W00JZ (synthetic substitute), 00W00KZ (nonautologous tissue substitute) and 1 more.

It is an operating-room procedure in the MS-DRG logic for 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), DRG 025 (Craniotomy and Endovascular Intracranial Procedures with MCC), DRG 026 (Craniotomy and Endovascular Intracranial Procedures with CC), DRG 027 (Craniotomy and Endovascular Intracranial Procedures without CC/MCC) and DRG 907 (Other O.R. Procedures for Injuries with MCC), under the surgical categories “Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis”, “Craniotomy and endovascular intracranial procedures”, “Other O.R. Procedures for Injuries” and 1 more.

It was added in FY2018, effective October 1, 2017.

What each character means

1. Section
0Medical and Surgical
2. Body System
0Central Nervous System and Cranial Nerves
3. Operation
WRevision

Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device

Revision can include correcting a malfunctioning or displaced device by taking out or putting in components of the device such as a screw or pin

Includes: Adjustment of position of pacemaker lead, recementing of hip prosthesis

4. Body Part
0Brain

Includes: Cerebrum; Corpus callosum; Encephalon

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
YOther Device

Includes: Alfapump(R) system

7. Qualifier
ZNo Qualifier

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.

MDC 24 · Multiple Significant Trauma · Craniotomy for Multiple Significant Trauma

ICD-9-CM equivalent

Converter →
  • 01.39Other incision of brainapproximate

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
  • FY2018 (effective 10/1/2017): Added
  • No changes since FY2018.

Common questions about 00W00YZ

Is 00W00YZ a valid ICD-10-PCS code for 2027?

Yes. 00W00YZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 00W00YZ an O.R. procedure?

Yes. 00W00YZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 00W00YZ group to?

Depending on the principal diagnosis, 00W00YZ can group to MS-DRG 023, MS-DRG 024, MS-DRG 025, MS-DRG 026, MS-DRG 027 and MS-DRG 907.

What is the ICD-9 procedure code for 00W00YZ?

The CMS GEMs map 00W00YZ to ICD-9-CM 01.39 (Other incision of brain).