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ICD-10-PCS 2027 procedure code

0WWC4YZRevision of Other Device in Mediastinum, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Revision of Other Device in Mediastinum, Perc Endo Approach

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 0WWC4YZ

0WWC4YZ is the ICD-10-PCS code for a revision procedure on the mediastinum using a percutaneous endoscopic approach with other device. In ICD-10-PCS, revision means correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device.

In plain terms, this corresponds to incision of mediastinum, the ICD-9-CM procedure title it maps to (34.1).

For a different body part, codes include 0WW04YZ (head), 0WW14YZ (cranial cavity), 0WW24YZ (face), 0WW44YZ (upper jaw), 0WW54YZ (lower jaw), 0WW64YZ (neck) and 15 more.

The same procedure with a different approach is coded 0WWC0YZ (open), 0WWC3YZ (percutaneous) and 0WWCXYZ (external).

With a different device, use 0WWC40Z (drainage device), 0WWC41Z (radioactive element), 0WWC43Z (infusion device), 0WWC47Z (autologous tissue substitute), 0WWC4GZ (defibrillator lead), 0WWC4JZ (synthetic substitute) and 1 more.

It is an operating-room procedure in the MS-DRG logic for DRG 166 (Other Respiratory System O.R. Procedures with MCC), DRG 167 (Other Respiratory System O.R. Procedures with CC), DRG 168 (Other Respiratory System O.R. 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 907 (Other O.R. Procedures for Injuries with MCC), under the surgical categories “Other Respiratory System O.R. Procedures”, “Other Circulatory System O.R. Procedures”, “Other O.R. Procedures for Injuries” and 1 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
WRevision

Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device

Revision can include correcting a malfunctioning or displaced device by taking out or putting in components of the device such as a screw or pin

Includes: Adjustment of position of pacemaker lead, recementing of hip prosthesis

4. Body Part
CMediastinum

Includes: Mediastinal cavity; Mediastinal space

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
YOther Device

Includes: Alfapump(R) system

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 →
  • 34.1Incision of mediastinumapproximate

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 0WWC4YZ

Is 0WWC4YZ a valid ICD-10-PCS code for 2027?

Yes. 0WWC4YZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0WWC4YZ an O.R. procedure?

Yes. 0WWC4YZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0WWC4YZ group to?

Depending on the principal diagnosis, 0WWC4YZ can group to MS-DRG 166, MS-DRG 167, MS-DRG 168, MS-DRG 361, MS-DRG 362 and MS-DRG 907.

What is the ICD-9 procedure code for 0WWC4YZ?

The CMS GEMs map 0WWC4YZ to ICD-9-CM 34.1 (Incision of mediastinum).