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ICD-10-PCS 2027 procedure code

0WJC0ZZInspection of Mediastinum, 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 0WJC0ZZ

0WJC0ZZ is the ICD-10-PCS code for a inspection procedure on the mediastinum using an open approach. In ICD-10-PCS, inspection means visually and/or manually exploring a body part.

In plain terms, this corresponds to Exploratory thoracotomy, the ICD-9-CM procedure title it maps to (34.02).

For a different body part, codes include 0WJ00ZZ (head), 0WJ10ZZ (cranial cavity), 0WJ20ZZ (face), 0WJ30ZZ (oral cavity and throat), 0WJ40ZZ (upper jaw), 0WJ50ZZ (lower jaw) and 16 more.

The same procedure with a different approach is coded 0WJC3ZZ (percutaneous) and 0WJC4ZZ (percutaneous endoscopic).

It is an operating-room procedure in the MS-DRG logic for DRG 163 (Major Chest Procedures with MCC), DRG 164 (Major Chest Procedures with CC), DRG 165 (Major Chest Procedures without CC/MCC), DRG 361 (Other Circulatory System O.R. Procedures with MCC), DRG 362 (Other Circulatory System O.R. Procedures without MCC) and DRG 673 (Other Kidney and Urinary Tract Procedures with MCC), under the surgical categories “Major Chest Procedures”, “Other Circulatory System O.R. Procedures”, “Other Kidney and Urinary Tract Procedures” and 4 more.

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
WAnatomical Regions, General
3. Operation
JInspection

Visually and/or manually exploring a body part

Visual exploration may be performed with or without optical instrumentation. Manual exploration may be performed directly or through intervening body layers

Includes: Diagnostic arthroscopy, exploratory laparotomy

4. Body Part
CMediastinum

Includes: Mediastinal cavity; Mediastinal 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.

MDC 05 · Diseases and Disorders of the Circulatory System · Other Circulatory System O.R. Procedures

ICD-9-CM equivalent

Converter →
  • 34.02Exploratory thoracotomyapproximate

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 0WJC0ZZ

Is 0WJC0ZZ a valid ICD-10-PCS code for 2027?

Yes. 0WJC0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0WJC0ZZ an O.R. procedure?

Yes. 0WJC0ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0WJC0ZZ group to?

Depending on the principal diagnosis, 0WJC0ZZ can group to MS-DRG 163, MS-DRG 164, MS-DRG 165, MS-DRG 361, MS-DRG 362 and MS-DRG 673.

What is the ICD-9 procedure code for 0WJC0ZZ?

The CMS GEMs map 0WJC0ZZ to ICD-9-CM 34.02 (Exploratory thoracotomy).