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ICD-10-PCS 2027 procedure code

02WA4RZRevision of Short-term External Heart Assist System in Heart, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Revision of Ext Heart Assist in Heart, Perc Endo Approach

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 02WA4RZ

02WA4RZ is the ICD-10-PCS code for a revision procedure on the heart using a percutaneous endoscopic approach with short-term external 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 02WA0RZ (open), 02WA3RZ (percutaneous) and 02WAXRZ (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
RShort-term External Heart Assist System
7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different qualifier

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)
  • FY2018 (effective 10/1/2017): Title revised — was “Revision of External Heart Assist System in Heart, Percutaneous Endoscopic Approach”

Common questions about 02WA4RZ

Is 02WA4RZ a valid ICD-10-PCS code for 2027?

Yes. 02WA4RZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 02WA4RZ an O.R. procedure?

Yes. 02WA4RZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 02WA4RZ group to?

Depending on the principal diagnosis, 02WA4RZ can group to MS-DRG 215, MS-DRG 001 and MS-DRG 002.

What is the ICD-9 procedure code for 02WA4RZ?

The CMS GEMs map 02WA4RZ to ICD-9-CM 37.63 (Repair of heart assist system).