ICD-10-PCS 2027 procedure code
4A027PZMeasurement of Cardiac Action Currents, Via Natural or Artificial Opening
Short description: Measurement of Cardiac Action Currents, Via Opening
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 4A027PZ
4A027PZ is the ICD-10-PCS code for a measurement procedure on the cardiac using a via natural or artificial opening approach with action currents. 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 other nonoperative cardiac and vascular measurements, the ICD-9-CM procedure title it maps to (89.59).
The same procedure with a different approach is coded 4A020PZ (open), 4A023PZ (percutaneous), 4A028PZ (via natural or artificial opening endoscopic) and 4A02XPZ (external).
With a different device, use 4A0274Z (electrical activity), 4A0279Z (output), 4A027CZ (rate), 4A027FZ (rhythm) and 4A027HZ (sound).
It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.
It was added in FY2018, effective October 1, 2017.
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
- 7Via Natural or Artificial Opening
Entry of instrumentation through a natural or artificial external opening to reach the site of the procedure
- 6. Function / Device
- PAction Currents
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different approach
Different function / device
ICD-9-CM equivalent
Converter →- 89.59Other nonoperative cardiac and vascular measurementsapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2018 (effective 10/1/2017): Added
- No changes since FY2018.
Common questions about 4A027PZ
Is 4A027PZ a valid ICD-10-PCS code for 2027?
- Yes. 4A027PZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 4A027PZ?
- The CMS GEMs map 4A027PZ to ICD-9-CM 89.59 (Other nonoperative cardiac and vascular measurements).