4A1204Z
4A1204Z is a valid billable ICD-10 procedure code for Monitoring of Cardiac Electrical Activity, Open Approach.
It is found in the 2025 version of the ICD-10 Procedure Coding System (PCS) and can be used in all HIPAA-covered transactions from Oct 01, 2024 - Sep 30, 2025.
Monitoring involves:
Determining the level of a physiological or physical function repetitively over a period of time.
Open approach involves:
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
ICD-10-PCS code structure for 4A1204Z — See Table View
| 1: Section | 4 |
Measurement and Monitoring |
|---|---|---|
| 2: Body System | A |
Physiological Systems |
| 3: Root Operation | 1 |
Monitoring |
| 4: Body Part | 2 |
Cardiac |
| 5: Approach | 0 |
Open |
| 6: Device | 4 |
Electrical Activity |
| 7: Qualifier | Z |
No Qualifier |
See also