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ICD-10-PCS 2027 procedure code

0HWT00ZRevision of Drainage Device in Right Breast, Open Approach

✓ Valid for 2027

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 0HWT00Z

0HWT00Z is the ICD-10-PCS code for a revision procedure on the right breast using an open approach with drainage 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 0HWU00Z (left breast).

The same procedure with a different approach is coded 0HWT30Z (percutaneous), 0HWT70Z (via natural or artificial opening) and 0HWT80Z (via natural or artificial opening endoscopic).

With a different device, use 0HWT07Z (autologous tissue substitute), 0HWT0JZ (synthetic substitute), 0HWT0KZ (nonautologous tissue substitute), 0HWT0NZ (tissue expander) and 0HWT0YZ (other device).

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

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
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
TBreast, 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
0Drainage Device

Includes: Cystostomy tube; Foley catheter; Percutaneous nephrostomy catheter; Thoracostomy tube

7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different body part

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 0HWT00Z

Is 0HWT00Z a valid ICD-10-PCS code for 2027?

Yes. 0HWT00Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 0HWT00Z?

The CMS GEMs map 0HWT00Z to ICD-9-CM 85.0 (Mastotomy).