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ICD-10-PCS 2027 procedure code

0WQC4ZZRepair Mediastinum, Percutaneous Endoscopic 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 0WQC4ZZ

0WQC4ZZ is the ICD-10-PCS code for a repair procedure on the mediastinum using a percutaneous endoscopic approach. In ICD-10-PCS, repair means restoring, to the extent possible, a body part to its normal anatomic structure and function.

In plain terms, this corresponds to other operations on thorax, the ICD-9-CM procedure title it maps to (34.99).

For a different body part, codes include 0WQ04ZZ (head), 0WQ24ZZ (face), 0WQ34ZZ (oral cavity and throat), 0WQ44ZZ (upper jaw), 0WQ54ZZ (lower jaw), 0WQ64ZZ (neck) and 6 more.

The same procedure with a different approach is coded 0WQC0ZZ (open) and 0WQC3ZZ (percutaneous).

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 907 (Other O.R. Procedures for Injuries with MCC), DRG 908 (Other O.R. Procedures for Injuries with CC) and DRG 909 (Other O.R. Procedures for Injuries without CC/MCC), under the surgical categories “Other Respiratory System O.R. 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
WAnatomical Regions, General
3. Operation
QRepair

Restoring, to the extent possible, a body part to its normal anatomic structure and function

Used only when the method to accomplish the repair is not one of the other root operations

Includes: Colostomy takedown, suture of laceration

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
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 →
  • 34.99Other operations on thoraxapproximate

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 0WQC4ZZ

Is 0WQC4ZZ a valid ICD-10-PCS code for 2027?

Yes. 0WQC4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0WQC4ZZ an O.R. procedure?

Yes. 0WQC4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0WQC4ZZ group to?

Depending on the principal diagnosis, 0WQC4ZZ can group to MS-DRG 166, MS-DRG 167, MS-DRG 168, MS-DRG 907, MS-DRG 908 and MS-DRG 909.

What is the ICD-9 procedure code for 0WQC4ZZ?

The CMS GEMs map 0WQC4ZZ to ICD-9-CM 34.99 (Other operations on thorax).