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ICD-10-PCS 2027 procedure code

0W9B4ZZDrainage of Left Pleural Cavity, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Drainage of Left Pleural Cavity, 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 0W9B4ZZ

0W9B4ZZ is the ICD-10-PCS code for a drainage procedure on the left pleural cavity using a percutaneous endoscopic approach. In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.

In plain terms, this corresponds to thoracoscopic drainage of pleural cavity, the ICD-9-CM procedure title it maps to (34.06).

For a different body part, codes include 0W904ZZ (head), 0W914ZZ (cranial cavity), 0W924ZZ (face), 0W934ZZ (oral cavity and throat), 0W944ZZ (upper jaw), 0W954ZZ (lower jaw) and 13 more.

The same procedure with a different approach is coded 0W9B0ZZ (open) and 0W9B3ZZ (percutaneous).

With a different device, use 0W9B40Z (drainage 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) and DRG 168 (Other Respiratory System O.R. Procedures without CC/MCC), under the surgical category “Other Respiratory System O.R. Procedures”.

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
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
BPleural Cavity, Left
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

Different device

Different qualifier

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 →
  • 34.06Thoracoscopic drainage of pleural cavityapproximate

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 0W9B4ZZ

Is 0W9B4ZZ a valid ICD-10-PCS code for 2027?

Yes. 0W9B4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0W9B4ZZ an O.R. procedure?

Yes. 0W9B4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0W9B4ZZ group to?

Depending on the principal diagnosis, 0W9B4ZZ can group to MS-DRG 166, MS-DRG 167 and MS-DRG 168.

What is the ICD-9 procedure code for 0W9B4ZZ?

The CMS GEMs map 0W9B4ZZ to ICD-9-CM 34.06 (Thoracoscopic drainage of pleural cavity).