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ICD-10-PCS 2027 procedure code

0W9C403Drainage of Mediastinum with Drainage Device, Active Mechanical Clearance, Percutaneous Endoscopic Approach

✓ Valid for 2027New for 2027

Short description: Drain Mediastinum w Drain Dev, Activ Mech Clrnc, Perc Endo

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

About 0W9C403

0W9C403 is the ICD-10-PCS code for a drainage procedure on the mediastinum using a percutaneous endoscopic approach with drainage device (qualifier: active mechanical clearance). In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.

For a different body part, codes include 0W99403 (right pleural cavity) and 0W9B403 (left pleural cavity).

The same procedure with a different approach is coded 0W9C003 (open) and 0W9C303 (percutaneous).

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

It was added in FY2027, effective October 1, 2026.

What each character means

1. Section
0Medical and Surgical
2. Body System
WAnatomical Regions, General
3. Operation
9Drainage

Taking or letting out fluids and/or gases from a body part

The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies

Includes: Thoracentesis, incision and drainage

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
0Drainage Device

Includes: Cystostomy tube; Foley catheter; Percutaneous nephrostomy catheter; Thoracostomy tube

7. Qualifier
3Active Mechanical Clearance

Other versions of this procedure

Different qualifier

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
  • FY2027 (effective 10/1/2026): Added

Common questions about 0W9C403

Is 0W9C403 a valid ICD-10-PCS code for 2027?

Yes. 0W9C403 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.