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ICD-10-PCS 2027 procedure code

0WM40ZZReattachment of Upper Jaw, Open Approach

✓ Valid for 2027O.R. procedure

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 0WM40ZZ

0WM40ZZ is the ICD-10-PCS code for a reattachment procedure on the upper jaw using an open approach. In ICD-10-PCS, reattachment means putting back in or on all or a portion of a separated body part to its normal location or other suitable location.

In plain terms, this corresponds to other repair and reconstruction of skin and subcutaneous tissue, the ICD-9-CM procedure title it maps to (86.89).

For a different body part, codes include 0WM20ZZ (face), 0WM50ZZ (lower jaw), 0WM60ZZ (neck), 0WM80ZZ (chest wall), 0WMF0ZZ (abdominal wall), 0WMK0ZZ (upper back) and 3 more.

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 579 (Other Skin, Subcutaneous Tissue and Breast Procedures with MCC), DRG 580 (Other Skin, Subcutaneous Tissue and Breast Procedures with CC) and DRG 581 (Other Skin, Subcutaneous Tissue and Breast Procedures without CC/MCC), under the surgical categories “Other Ear, Nose, Mouth and Throat O.R. Procedures”, “Other Skin, Subcutaneous Tissue and Breast Procedures” and “Other O.R. Procedures for Injuries”.

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
WAnatomical Regions, General
3. Operation
MReattachment

Putting back in or on all or a portion of a separated body part to its normal location or other suitable location

Vascular circulation and nervous pathways may or may not be reestablished

Includes: Reattachment of hand, reattachment of avulsed kidney

4. Body Part
4Upper Jaw
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
ZNo 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 →
  • 86.89Other repair and reconstruction of skin and subcutaneous tissueapproximate

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 0WM40ZZ

Is 0WM40ZZ a valid ICD-10-PCS code for 2027?

Yes. 0WM40ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0WM40ZZ an O.R. procedure?

Yes. 0WM40ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0WM40ZZ group to?

Depending on the principal diagnosis, 0WM40ZZ can group to MS-DRG 143, MS-DRG 144, MS-DRG 145, MS-DRG 579, MS-DRG 580 and MS-DRG 581.

What is the ICD-9 procedure code for 0WM40ZZ?

The CMS GEMs map 0WM40ZZ to ICD-9-CM 86.89 (Other repair and reconstruction of skin and subcutaneous tissue).