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ICD-10-PCS 2027 procedure code

0UNM0ZZRelease Vulva, Open Approach

✓ Valid for 2027O.R. procedureFemale only

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 0UNM0ZZ

0UNM0ZZ is the ICD-10-PCS code for a release procedure on the vulva 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 lysis of vulvar adhesions, the ICD-9-CM procedure title it maps to (71.01).

For a different body part, codes include 0UN00ZZ (right ovary), 0UN10ZZ (left ovary), 0UN20ZZ (bilateral ovaries), 0UN40ZZ (uterine supporting structure), 0UN50ZZ (right fallopian tube), 0UN60ZZ (left fallopian tube) and 8 more.

The same procedure with a different approach is coded 0UNMXZZ (external).

It is an operating-room procedure in the MS-DRG logic for DRG 746 (Vagina, Cervix and Vulva Procedures with CC/MCC), DRG 747 (Vagina, Cervix and Vulva 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 “Vagina, Cervix and Vulva 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
UFemale Reproductive System
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
MVulva

Includes: Labia majora; Labia minora

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 approach

MS-DRG v44.0 grouping

All DRGs →

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

MDC 13 · Diseases and Disorders of the Female Reproductive System · Vagina, Cervix and Vulva Procedures

ICD-9-CM equivalent

Converter →
  • 71.01Lysis of vulvar adhesionsapproximate

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 0UNM0ZZ

Is 0UNM0ZZ a valid ICD-10-PCS code for 2027?

Yes. 0UNM0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0UNM0ZZ an O.R. procedure?

Yes. 0UNM0ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0UNM0ZZ group to?

Depending on the principal diagnosis, 0UNM0ZZ can group to MS-DRG 746, MS-DRG 747, MS-DRG 907, MS-DRG 908, MS-DRG 909 and MS-DRG 957.

What is the ICD-9 procedure code for 0UNM0ZZ?

The CMS GEMs map 0UNM0ZZ to ICD-9-CM 71.01 (Lysis of vulvar adhesions).