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ICD-10-PCS 2027 procedure code

0NWW04ZRevision of Internal Fixation Device in Facial Bone, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Revision of Int Fix in Facial Bone, 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 0NWW04Z

0NWW04Z is the ICD-10-PCS code for a revision procedure on the facial bone using an open approach with internal 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.

In plain terms, this corresponds to other incision of facial bone, the ICD-9-CM procedure title it maps to (76.09).

For a different body part, codes include 0NW004Z (skull) and 0NWB04Z (nasal bone).

The same procedure with a different approach is coded 0NWW34Z (percutaneous), 0NWW44Z (percutaneous endoscopic) and 0NWWX4Z (external).

With a different device, use 0NWW00Z (drainage device), 0NWW05Z (external fixation device), 0NWW07Z (autologous tissue substitute), 0NWW0JZ (synthetic substitute), 0NWW0KZ (nonautologous tissue substitute) and 0NWW0MZ (bone growth stimulator).

It is an operating-room procedure in the MS-DRG logic for DRG 143 (Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC), DRG 144 (Other Ear, Nose, Mouth and Throat O.R. Procedures with CC) and DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), under the surgical category “Other Ear, Nose, Mouth and Throat O.R. 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
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
0Open

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

6. Device
4Internal 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.

ICD-9-CM equivalent

Converter →
  • 76.09Other incision of facial boneapproximate

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 0NWW04Z

Is 0NWW04Z a valid ICD-10-PCS code for 2027?

Yes. 0NWW04Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0NWW04Z an O.R. procedure?

Yes. 0NWW04Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 0NWW04Z group to?

Depending on the principal diagnosis, 0NWW04Z can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 0NWW04Z?

The CMS GEMs map 0NWW04Z to ICD-9-CM 76.09 (Other incision of facial bone).