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ICD-10-PCS 2027 procedure code

0HWU0YZRevision of Other Device in Left Breast, Open Approach

✓ Valid for 2027O.R. procedure

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 0HWU0YZ

0HWU0YZ is the ICD-10-PCS code for a revision procedure on the left breast using an open approach with other 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 Mastotomy, the ICD-9-CM procedure title it maps to (85.0).

For a different body part, codes include 0HWT0YZ (right breast).

The same procedure with a different approach is coded 0HWU3YZ (percutaneous), 0HWU7YZ (via natural or artificial opening) and 0HWU8YZ (via natural or artificial opening endoscopic).

With a different device, use 0HWU00Z (drainage device), 0HWU07Z (autologous tissue substitute), 0HWU0JZ (synthetic substitute), 0HWU0KZ (nonautologous tissue substitute) and 0HWU0NZ (tissue expander).

It is an operating-room procedure in the MS-DRG logic for DRG 584 (Breast Biopsy, Local Excision and Other Breast Procedures with CC/MCC), DRG 585 (Breast Biopsy, Local Excision and Other Breast Procedures without CC/MCC), DRG 907 (Other O.R. Procedures for Injuries with MCC), DRG 908 (Other O.R. Procedures for Injuries with CC), DRG 909 (Other O.R. Procedures for Injuries without CC/MCC) and DRG 957 (Other O.R. Procedures for Multiple Significant Trauma with MCC), under the surgical categories “Breast Biopsy, Local Excision and Other Breast Procedures”, “Other O.R. Procedures for Injuries” and “Other O.R. Procedures for Multiple Significant Trauma”.

It was added in FY2018, effective October 1, 2017.

What each character means

1. Section
0Medical and Surgical
2. Body System
HSkin and Breast
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
UBreast, 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
YOther Device

Includes: Alfapump(R) system

7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different body part

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

MDC 09 · Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast · Breast Biopsy, Local Excision and Other Breast Procedures

ICD-9-CM equivalent

Converter →
  • 85.0Mastotomyapproximate

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
  • FY2018 (effective 10/1/2017): Added
  • No changes since FY2018.

Common questions about 0HWU0YZ

Is 0HWU0YZ a valid ICD-10-PCS code for 2027?

Yes. 0HWU0YZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0HWU0YZ an O.R. procedure?

Yes. 0HWU0YZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0HWU0YZ group to?

Depending on the principal diagnosis, 0HWU0YZ can group to MS-DRG 584, MS-DRG 585, MS-DRG 907, MS-DRG 908, MS-DRG 909 and MS-DRG 957.

What is the ICD-9 procedure code for 0HWU0YZ?

The CMS GEMs map 0HWU0YZ to ICD-9-CM 85.0 (Mastotomy).