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ICD-10-PCS 2027 procedure code

0WCH0ZZExtirpation of Matter from Retroperitoneum, Open Approach

✓ Valid for 2027O.R. procedure

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 0WCH0ZZ

0WCH0ZZ is the ICD-10-PCS code for a extirpation procedure on the retroperitoneum using an open approach. In ICD-10-PCS, extirpation means taking or cutting out solid matter from a body part.

In plain terms, this corresponds to incision of peritoneum, the ICD-9-CM procedure title it maps to (54.95).

For a different body part, codes include 0WC10ZZ (cranial cavity), 0WC30ZZ (oral cavity and throat), 0WC40ZZ (upper jaw), 0WC50ZZ (lower jaw), 0WC90ZZ (right pleural cavity), 0WCB0ZZ (left pleural cavity) and 7 more.

The same procedure with a different approach is coded 0WCH3ZZ (percutaneous), 0WCH4ZZ (percutaneous endoscopic) and 0WCHXZZ (external).

It is an operating-room procedure in the MS-DRG logic for DRG 356 (Other Digestive System O.R. Procedures with MCC), DRG 357 (Other Digestive System O.R. Procedures with CC), DRG 358 (Other Digestive System O.R. Procedures without CC/MCC), DRG 673 (Other Kidney and Urinary Tract Procedures with MCC), DRG 674 (Other Kidney and Urinary Tract Procedures with CC) and DRG 675 (Other Kidney and Urinary Tract Procedures without CC/MCC), under the surgical categories “Other Digestive System O.R. Procedures”, “Other Kidney and Urinary Tract Procedures”, “Other O.R. Procedures for Injuries” and 1 more.

It was added in FY2018, effective October 1, 2017.

What each character means

1. Section
0Medical and Surgical
2. Body System
WAnatomical Regions, General
3. Operation
CExtirpation

Taking or cutting out solid matter from a body part

The solid matter may be an abnormal byproduct of a biological function or a foreign body; it may be imbedded in a body part or in the lumen of a tubular body part. The solid matter may or may not have been previously broken into pieces

Includes: Thrombectomy, choledocholithotomy

4. Body Part
HRetroperitoneum

Includes: Retroperitoneal cavity; Retroperitoneal space

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.

ICD-9-CM equivalent

Converter →
  • 54.95Incision of peritoneumapproximate

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
  • FY2018 (effective 10/1/2017): Added
  • No changes since FY2018.

Common questions about 0WCH0ZZ

Is 0WCH0ZZ a valid ICD-10-PCS code for 2027?

Yes. 0WCH0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0WCH0ZZ an O.R. procedure?

Yes. 0WCH0ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0WCH0ZZ group to?

Depending on the principal diagnosis, 0WCH0ZZ can group to MS-DRG 356, MS-DRG 357, MS-DRG 358, MS-DRG 673, MS-DRG 674 and MS-DRG 675.

What is the ICD-9 procedure code for 0WCH0ZZ?

The CMS GEMs map 0WCH0ZZ to ICD-9-CM 54.95 (Incision of peritoneum).