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ICD-10-PCS 2027 procedure code

0NST05ZReposition Right Mandible with External Fixation Device, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Reposition Right Mandible with Ext Fix, 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 0NST05Z

0NST05Z is the ICD-10-PCS code for a reposition procedure on the right mandible using an open approach with external fixation device. In ICD-10-PCS, reposition means moving to its normal location, or other suitable location, all or a portion of a body part.

In plain terms, this corresponds to open reduction of mandibular fracture, the ICD-9-CM procedure title it maps to (76.76).

For a different body part, codes include 0NS005Z (skull), 0NSR05Z (maxilla) and 0NSV05Z (left mandible).

The same procedure with a different approach is coded 0NST35Z (percutaneous) and 0NST45Z (percutaneous endoscopic).

With a different device, use 0NST04Z (internal fixation device) and 0NST0ZZ (no device).

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), DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), DRG 515 (Other Musculoskeletal System and Connective Tissue O.R. Procedures with MCC), DRG 516 (Other Musculoskeletal System and Connective Tissue O.R. Procedures with CC) and DRG 517 (Other Musculoskeletal System and Connective Tissue O.R. Procedures without CC/MCC), under the surgical categories “Other Ear, Nose, Mouth and Throat O.R. Procedures”, “Other Musculoskeletal System and Connective Tissue O.R. Procedures”, “Other O.R. Procedures for Injuries” and 1 more.

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
SReposition

Moving to its normal location, or other suitable location, all or a portion of a body part

The body part is moved to a new location from an abnormal location, or from a normal location where it is not functioning correctly. The body part may or may not be cut out or off to be moved to the new location

Includes: Reposition of undescended testicle, fracture reduction

4. Body Part
TMandible, Right
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
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.

ICD-9-CM equivalent

Converter →
  • 76.76Open reduction of mandibular fractureapproximate

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 0NST05Z

Is 0NST05Z a valid ICD-10-PCS code for 2027?

Yes. 0NST05Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0NST05Z an O.R. procedure?

Yes. 0NST05Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 0NST05Z group to?

Depending on the principal diagnosis, 0NST05Z can group to MS-DRG 143, MS-DRG 144, MS-DRG 145, MS-DRG 515, MS-DRG 516 and MS-DRG 517.

What is the ICD-9 procedure code for 0NST05Z?

The CMS GEMs map 0NST05Z to ICD-9-CM 76.76 (Open reduction of mandibular fracture).