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ICD-10-PCS 2027 procedure code

4B02XTZMeasurement of Cardiac Defibrillator, 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 4B02XTZ

4B02XTZ is the ICD-10-PCS code for a measurement procedure on the cardiac using an external approach with defibrillator. In ICD-10-PCS, measurement means determining the level of a physiological or physical function at a point in time.

In plain terms, this corresponds to automatic implantable cardioverter/defibrillator (AICD) check, the ICD-9-CM procedure title it maps to (89.49).

With a different device, use 4B02XSZ (pacemaker).

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
4Measurement and Monitoring
2. Body System
BPhysiological Devices
3. Operation
0Measurement

Determining the level of a physiological or physical function at a point in time

4. Body System
2Cardiac
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. Function / Device
TDefibrillator
7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different function / device

ICD-9-CM equivalent

Converter →
  • 89.49Automatic implantable cardioverter/defibrillator (AICD) checkexact

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 4B02XTZ

Is 4B02XTZ a valid ICD-10-PCS code for 2027?

Yes. 4B02XTZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 4B02XTZ?

The CMS GEMs map 4B02XTZ to ICD-9-CM 89.49 (Automatic implantable cardioverter/defibrillator (AICD) check).