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ICD-10-PCS 2027 procedure code

0NHN04ZInsertion of Internal Fixation Device into Left Zygomatic Bone, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Insertion of Int Fix into L Zygomatic 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 0NHN04Z

0NHN04Z is the ICD-10-PCS code for a insertion procedure on the left zygomatic bone using an open approach with internal fixation device. In ICD-10-PCS, insertion means putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part.

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 0NH004Z (skull), 0NH104Z (frontal bone), 0NH304Z (right parietal bone), 0NH404Z (left parietal bone), 0NH504Z (right temporal bone), 0NH604Z (left temporal bone) and 16 more.

The same procedure with a different approach is coded 0NHN34Z (percutaneous) and 0NHN44Z (percutaneous endoscopic).

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
HInsertion

Putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part

Includes: Insertion of radioactive implant, insertion of central venous catheter

4. Body Part
NZygomatic Bone, Left
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 0NHN04Z

Is 0NHN04Z a valid ICD-10-PCS code for 2027?

Yes. 0NHN04Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0NHN04Z an O.R. procedure?

Yes. 0NHN04Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 0NHN04Z group to?

Depending on the principal diagnosis, 0NHN04Z can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 0NHN04Z?

The CMS GEMs map 0NHN04Z to ICD-9-CM 76.09 (Other incision of facial bone).