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ICD-10-PCS 2027 procedure code

0WW040ZRevision of Drainage Device in Head, Percutaneous Endoscopic Approach

✓ Valid for 2027Non-O.R. procedure

Short description: Revision of Drainage Device in Head, 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 0WW040Z

0WW040Z is the ICD-10-PCS code for a revision procedure on the head using a percutaneous endoscopic approach with drainage 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 other incision of skin and subcutaneous tissue, the ICD-9-CM procedure title it maps to (86.09).

For a different body part, codes include 0WW140Z (cranial cavity), 0WW240Z (face), 0WW440Z (upper jaw), 0WW540Z (lower jaw), 0WW640Z (neck), 0WW840Z (chest wall) and 12 more.

The same procedure with a different approach is coded 0WW000Z (open), 0WW030Z (percutaneous) and 0WW0X0Z (external).

With a different device, use 0WW041Z (radioactive element), 0WW043Z (infusion device), 0WW047Z (autologous tissue substitute), 0WW04JZ (synthetic substitute), 0WW04KZ (nonautologous tissue substitute) and 0WW04YZ (other device).

It is a non-O.R. procedure that is part of the MS-DRG logic for DRG 579 (Other Skin, Subcutaneous Tissue and Breast Procedures with MCC), DRG 580 (Other Skin, Subcutaneous Tissue and Breast Procedures with CC) and DRG 581 (Other Skin, Subcutaneous Tissue and Breast Procedures without CC/MCC), under the surgical category “Other Skin, Subcutaneous Tissue and Breast 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
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
0Head
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
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 →
  • 86.09Other incision of skin and subcutaneous tissueapproximate

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 0WW040Z

Is 0WW040Z a valid ICD-10-PCS code for 2027?

Yes. 0WW040Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0WW040Z an O.R. procedure?

No. 0WW040Z is designated non-O.R. in MS-DRG v44.0.

What DRG does 0WW040Z group to?

Depending on the principal diagnosis, 0WW040Z can group to MS-DRG 579, MS-DRG 580 and MS-DRG 581.

What is the ICD-9 procedure code for 0WW040Z?

The CMS GEMs map 0WW040Z to ICD-9-CM 86.09 (Other incision of skin and subcutaneous tissue).