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ICD-10-PCS 2027 procedure code

0WW4XYZRevision of Other Device in Upper Jaw, External Approach

✓ Valid for 2027

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 0WW4XYZ

0WW4XYZ is the ICD-10-PCS code for a revision procedure on the upper jaw using an external approach with other 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 miscellaneous procedures, the ICD-9-CM procedure title it maps to (99.99).

For a different body part, codes include 0WW0XYZ (head), 0WW1XYZ (cranial cavity), 0WW2XYZ (face), 0WW5XYZ (lower jaw), 0WW6XYZ (neck), 0WW8XYZ (chest wall) and 15 more.

The same procedure with a different approach is coded 0WW40YZ (open), 0WW43YZ (percutaneous) and 0WW44YZ (percutaneous endoscopic).

With a different device, use 0WW4X0Z (drainage device), 0WW4X1Z (radioactive element), 0WW4X3Z (infusion device), 0WW4X7Z (autologous tissue substitute), 0WW4XJZ (synthetic substitute) and 0WW4XKZ (nonautologous tissue substitute).

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

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
4Upper Jaw
5. Approach
XExternal

Procedures performed directly on the skin or mucous membrane and procedures performed indirectly by the application of external force through the skin or mucous membrane

6. Device
YOther Device

Includes: Alfapump(R) system

7. Qualifier
ZNo Qualifier

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 99.99Other miscellaneous proceduresapproximate

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 0WW4XYZ

Is 0WW4XYZ a valid ICD-10-PCS code for 2027?

Yes. 0WW4XYZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 0WW4XYZ?

The CMS GEMs map 0WW4XYZ to ICD-9-CM 99.99 (Other miscellaneous procedures).