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ICD-10-PCS 2027 procedure code

0HNW0ZZRelease Right Nipple, 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 0HNW0ZZ

0HNW0ZZ is the ICD-10-PCS code for a release procedure on the right nipple using an open approach. In ICD-10-PCS, release means freeing a body part from an abnormal physical constraint by cutting or by the use of force.

In plain terms, this corresponds to other mammoplasty, the ICD-9-CM procedure title it maps to (85.89).

For a different body part, codes include 0HNT0ZZ (right breast), 0HNU0ZZ (left breast), 0HNV0ZZ (bilateral breast) and 0HNX0ZZ (left nipple).

The same procedure with a different approach is coded 0HNW3ZZ (percutaneous), 0HNW7ZZ (via natural or artificial opening), 0HNW8ZZ (via natural or artificial opening endoscopic) and 0HNWXZZ (external).

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) and DRG 585 (Breast Biopsy, Local Excision and Other Breast Procedures without CC/MCC), under the surgical category “Breast Biopsy, Local Excision and Other Breast 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
HSkin and Breast
3. Operation
NRelease

Freeing a body part from an abnormal physical constraint by cutting or by the use of force

Some of the restraining tissue may be taken out but none of the body part is taken out

Includes: Adhesiolysis, carpal tunnel release

4. Body Part
WNipple, 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
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.

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 →
  • 85.89Other mammoplastyapproximate

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 0HNW0ZZ

Is 0HNW0ZZ a valid ICD-10-PCS code for 2027?

Yes. 0HNW0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0HNW0ZZ an O.R. procedure?

Yes. 0HNW0ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0HNW0ZZ group to?

Depending on the principal diagnosis, 0HNW0ZZ can group to MS-DRG 584 and MS-DRG 585.

What is the ICD-9 procedure code for 0HNW0ZZ?

The CMS GEMs map 0HNW0ZZ to ICD-9-CM 85.89 (Other mammoplasty).