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ICD-10-PCS 2027 procedure code

0HBY0ZZExcision of Supernumerary Breast, 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 0HBY0ZZ

0HBY0ZZ is the ICD-10-PCS code for a excision procedure on the supernumerary breast using an open approach. In ICD-10-PCS, excision means cutting out or off, without replacement, a portion of a body part.

In plain terms, this corresponds to excision of ectopic breast tissue, the ICD-9-CM procedure title it maps to (85.24).

For a different body part, codes include 0HBT0ZZ (right breast), 0HBU0ZZ (left breast), 0HBV0ZZ (bilateral breast), 0HBW0ZZ (right nipple) and 0HBX0ZZ (left nipple).

The same procedure with a different approach is coded 0HBY3ZZ (percutaneous), 0HBY7ZZ (via natural or artificial opening) and 0HBY8ZZ (via natural or artificial opening endoscopic).

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 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
BExcision

Cutting out or off, without replacement, a portion of a body part

The qualifier DIAGNOSTIC is used to identify excision procedures that are biopsies

Includes: Partial nephrectomy, liver biopsy

4. Body Part
YSupernumerary Breast
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

Different qualifier

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 →
  • 85.24Excision of ectopic breast 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 0HBY0ZZ

Is 0HBY0ZZ a valid ICD-10-PCS code for 2027?

Yes. 0HBY0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0HBY0ZZ an O.R. procedure?

Yes. 0HBY0ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0HBY0ZZ group to?

Depending on the principal diagnosis, 0HBY0ZZ 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 0HBY0ZZ?

The CMS GEMs map 0HBY0ZZ to ICD-9-CM 85.24 (Excision of ectopic breast tissue).