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ICD-10-PCS 2027 procedure code

0WHC03ZInsertion of Infusion Device into 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 0WHC03Z

0WHC03Z is the ICD-10-PCS code for a insertion procedure on the mediastinum using an open approach with infusion device. In ICD-10-PCS, insertion means putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part.

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 0WH003Z (head), 0WH103Z (cranial cavity), 0WH203Z (face), 0WH303Z (oral cavity and throat), 0WH403Z (upper jaw), 0WH503Z (lower jaw) and 16 more.

The same procedure with a different approach is coded 0WHC33Z (percutaneous) and 0WHC43Z (percutaneous endoscopic).

With a different device, use 0WHC01Z (radioactive element), 0WHC0GZ (defibrillator lead) and 0WHC0YZ (other device).

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
HInsertion

Putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part

Includes: Insertion of radioactive implant, insertion of central venous catheter

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
3Infusion Device

Includes: Ascenda Intrathecal Catheter; InDura, intrathecal catheter (1P) (spinal); Non-tunneled central venous catheter; Peripherally inserted central catheter (PICC); Tunneled spinal (intrathecal) catheter

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 0WHC03Z

Is 0WHC03Z a valid ICD-10-PCS code for 2027?

Yes. 0WHC03Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0WHC03Z an O.R. procedure?

Yes. 0WHC03Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 0WHC03Z group to?

Depending on the principal diagnosis, 0WHC03Z 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 0WHC03Z?

The CMS GEMs map 0WHC03Z to ICD-9-CM 34.1 (Incision of mediastinum).