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ICD-10-PCS 2027 procedure code

01WY0YZRevision of Other Device in Peripheral Nerve, 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 01WY0YZ

01WY0YZ is the ICD-10-PCS code for a revision procedure on the peripheral nerve 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 cranial and peripheral nerves, the ICD-9-CM procedure title it maps to (04.04).

The same procedure with a different approach is coded 01WY3YZ (percutaneous) and 01WY4YZ (percutaneous endoscopic).

With a different device, use 01WY00Z (drainage device), 01WY02Z (monitoring device), 01WY07Z (autologous tissue substitute) and 01WY0MZ (neurostimulator lead).

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 was added in FY2018, effective October 1, 2017.

What each character means

1. Section
0Medical and Surgical
2. Body System
1Peripheral Nervous System
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
YPeripheral 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
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.

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

Common questions about 01WY0YZ

Is 01WY0YZ a valid ICD-10-PCS code for 2027?

Yes. 01WY0YZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 01WY0YZ an O.R. procedure?

Yes. 01WY0YZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 01WY0YZ group to?

Depending on the principal diagnosis, 01WY0YZ can group to MS-DRG 040, MS-DRG 041 and MS-DRG 042.

What is the ICD-9 procedure code for 01WY0YZ?

The CMS GEMs map 01WY0YZ to ICD-9-CM 04.04 (Other incision of cranial and peripheral nerves).