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ICD-10-PCS 2027 procedure code

00WE02ZRevision of Monitoring Device in Cranial Nerve, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Revision of Monitoring Device in Cranial Nrv, Open 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 00WE02Z

00WE02Z is the ICD-10-PCS code for a revision procedure on the cranial nerve using an open approach with monitoring 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 cranial and peripheral nerves, the ICD-9-CM procedure title it maps to (04.04).

For a different body part, codes include 00W002Z (brain), 00W602Z (cerebral ventricle), 00WU02Z (spinal canal) and 00WV02Z (spinal cord).

The same procedure with a different approach is coded 00WE32Z (percutaneous), 00WE42Z (percutaneous endoscopic) and 00WEX2Z (external).

With a different device, use 00WE00Z (drainage device), 00WE03Z (infusion device), 00WE07Z (autologous tissue substitute), 00WE0MZ (neurostimulator lead) and 00WE0YZ (other device).

It is an operating-room procedure in the MS-DRG logic for DRG 040 (Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC), DRG 041 (Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator) and DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), under the surgical category “Peripheral, Cranial Nerve and Other Nervous System 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
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
ECranial Nerve
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
2Monitoring Device

Includes: Blood glucose monitoring system; Cardiac event recorder; Continuous Glucose Monitoring (CGM) device; Implantable glucose monitoring device; Loop recorder, implantable; Reveal (LINQ)(DX)(XT)

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.

ICD-9-CM equivalent

Converter →
  • 04.04Other incision of cranial and peripheral nervesapproximate

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 00WE02Z

Is 00WE02Z a valid ICD-10-PCS code for 2027?

Yes. 00WE02Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 00WE02Z an O.R. procedure?

Yes. 00WE02Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 00WE02Z group to?

Depending on the principal diagnosis, 00WE02Z can group to MS-DRG 040, MS-DRG 041 and MS-DRG 042.

What is the ICD-9 procedure code for 00WE02Z?

The CMS GEMs map 00WE02Z to ICD-9-CM 04.04 (Other incision of cranial and peripheral nerves).