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ICD-10-PCS 2027 procedure code

0UNK4ZZRelease Hymen, Percutaneous Endoscopic 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 0UNK4ZZ

0UNK4ZZ is the ICD-10-PCS code for a release procedure on the hymen using a percutaneous endoscopic 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 Hymenorrhaphy, the ICD-9-CM procedure title it maps to (70.76).

For a different body part, codes include 0UN04ZZ (right ovary), 0UN14ZZ (left ovary), 0UN24ZZ (bilateral ovaries), 0UN44ZZ (uterine supporting structure), 0UN54ZZ (right fallopian tube), 0UN64ZZ (left fallopian tube) and 5 more.

The same procedure with a different approach is coded 0UNK0ZZ (open), 0UNK3ZZ (percutaneous), 0UNK7ZZ (via natural or artificial opening), 0UNK8ZZ (via natural or artificial opening endoscopic) and 0UNKXZZ (external).

It is an operating-room procedure in the MS-DRG logic for DRG 746 (Vagina, Cervix and Vulva Procedures with CC/MCC) and DRG 747 (Vagina, Cervix and Vulva Procedures without CC/MCC), under the surgical category “Vagina, Cervix and Vulva 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
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
KHymen
5. Approach
4Percutaneous Endoscopic

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize 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 13 · Diseases and Disorders of the Female Reproductive System · Vagina, Cervix and Vulva Procedures

ICD-9-CM equivalent

Converter →
  • 70.76Hymenorrhaphyapproximate

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 0UNK4ZZ

Is 0UNK4ZZ a valid ICD-10-PCS code for 2027?

Yes. 0UNK4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0UNK4ZZ an O.R. procedure?

Yes. 0UNK4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0UNK4ZZ group to?

Depending on the principal diagnosis, 0UNK4ZZ can group to MS-DRG 746 and MS-DRG 747.

What is the ICD-9 procedure code for 0UNK4ZZ?

The CMS GEMs map 0UNK4ZZ to ICD-9-CM 70.76 (Hymenorrhaphy).