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ICD-10-PCS 2027 procedure code

02WA4QZRevision of Implantable Heart Assist System in Heart, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedureLimited coverage (Medicare)

Short description: Revise of Implant Heart Assist in Heart, 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 02WA4QZ

02WA4QZ is the ICD-10-PCS code for a revision procedure on the heart using a percutaneous endoscopic approach with implantable heart assist system. 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 repair of heart assist system, the ICD-9-CM procedure title it maps to (37.63).

The same procedure with a different approach is coded 02WA0QZ (open), 02WA3QZ (percutaneous) and 02WAXQZ (external).

With a different device, use 02WA42Z (monitoring device), 02WA43Z (infusion device), 02WA47Z (autologous tissue substitute), 02WA48Z (zooplastic tissue), 02WA4CZ (extraluminal device), 02WA4DZ (intraluminal device) and 6 more.

It is an operating-room procedure in the MS-DRG logic for DRG 215 (Other Heart Assist System Implant), DRG 001 (Heart Transplant or Implant of Heart Assist System with MCC) and DRG 002 (Heart Transplant or Implant of Heart Assist System without MCC), under the surgical categories “Other Heart Assist System Implant” and “Heart Transplant or Implant of Heart Assist System”.

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
2Heart and Great Vessels
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
AHeart
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
QImplantable Heart Assist System
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 Heart Assist System Implant

ICD-9-CM equivalent

Converter →
  • 37.63Repair of heart assist systemapproximate

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 02WA4QZ

Is 02WA4QZ a valid ICD-10-PCS code for 2027?

Yes. 02WA4QZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 02WA4QZ an O.R. procedure?

Yes. 02WA4QZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 02WA4QZ group to?

Depending on the principal diagnosis, 02WA4QZ can group to MS-DRG 215, MS-DRG 001 and MS-DRG 002.

What is the ICD-9 procedure code for 02WA4QZ?

The CMS GEMs map 02WA4QZ to ICD-9-CM 37.63 (Repair of heart assist system).