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ICD-10-PCS 2027 procedure code

0NWW35ZRevision of External Fixation Device in Facial Bone, Percutaneous Approach

✓ Valid for 2027O.R. procedure

Short description: Revision of Ext Fix in Facial Bone, Perc Approach

Code last changed in FY2025 (effective October 1, 2024). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 0NWW35Z

0NWW35Z is the ICD-10-PCS code for a revision procedure on the facial bone using a percutaneous approach with external fixation 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.

For a different body part, codes include 0NW035Z (skull) and 0NWB35Z (nasal bone).

The same procedure with a different approach is coded 0NWW05Z (open), 0NWW45Z (percutaneous endoscopic) and 0NWWX5Z (external).

With a different device, use 0NWW30Z (drainage device), 0NWW34Z (internal fixation device), 0NWW37Z (autologous tissue substitute), 0NWW3JZ (synthetic substitute), 0NWW3KZ (nonautologous tissue substitute) and 0NWW3MZ (bone growth stimulator).

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) and DRG 027 (Craniotomy and Endovascular Intracranial Procedures without CC/MCC), under the surgical categories “Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis” and “Craniotomy and endovascular intracranial procedures”.

It was added in FY2025, effective October 1, 2024.

What each character means

1. Section
0Medical and Surgical
2. Body System
NHead and Facial Bones
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
WFacial Bone
5. Approach
3Percutaneous

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure

6. Device
5External Fixation Device
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.

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
  • FY2025 (effective 10/1/2024): Added
  • No changes since FY2025.

Common questions about 0NWW35Z

Is 0NWW35Z a valid ICD-10-PCS code for 2027?

Yes. 0NWW35Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0NWW35Z an O.R. procedure?

Yes. 0NWW35Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 0NWW35Z group to?

Depending on the principal diagnosis, 0NWW35Z can group to MS-DRG 023, MS-DRG 024, MS-DRG 025, MS-DRG 026 and MS-DRG 027.