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ICD-10-PCS 2027 procedure code

4A02XM4Measurement of Cardiac Total Activity, 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 4A02XM4

4A02XM4 is the ICD-10-PCS code for a measurement procedure on the cardiac using an external approach with total activity (qualifier: stress). 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 cardiovascular stress test using treadmill, Masters' two-step stress test, cardiovascular stress test using bicycle ergometer and 1 more, the ICD-9-CM procedure titles it maps to (89.41, 89.42, 89.43 and 1 more).

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
APhysiological Systems
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
MTotal Activity
7. Qualifier
4Stress

ICD-9-CM equivalent

Converter →
  • 89.41Cardiovascular stress test using treadmillapproximate
  • 89.42Masters' two-step stress testapproximate
  • 89.43Cardiovascular stress test using bicycle ergometerapproximate
  • 89.44Other cardiovascular stress testapproximate

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 4A02XM4

Is 4A02XM4 a valid ICD-10-PCS code for 2027?

Yes. 4A02XM4 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 4A02XM4?

The CMS GEMs map 4A02XM4 to ICD-9-CM 89.41 (Cardiovascular stress test using treadmill), 89.42 (Masters' two-step stress test), 89.43 (Cardiovascular stress test using bicycle ergometer) and 1 more.