4A0204ZMeasurement of Cardiac Electrical Activity, Open Approach

Measurement and Monitoring›Physiological Systems›Measurement
  • Billable / Specific Code
ICD-10-PCS 4A0204Z
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

4A0204Z is a billable ICD-10-PCS procedure code for Measurement of Cardiac Electrical Activity, Open Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The root operation Measurement involves determining the level of a physiological or physical function at a point in time.

Code Identity

ICD-10-PCS Code
4A0204Z
Billable Status
Yes — Valid for Submission
Code Describes
Measurement of Cardiac Electrical Activity, Open Approach
Parent Code
4A0
Short Description
Measurement of Cardiac Electrical Activity, Open Approach

PCS Table Breakdown

Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.

PositionDesignationValueMeaning
1Section4Measurement and Monitoring
2Body SystemAPhysiological Systems
3Operation0Measurement
4BodySystem2Cardiac
5Approach0Open
6Function/Device4Electrical Activity
7QualifierZNo Qualifier

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 4A0204Z under the General Equivalence Mappings.

89.52
Approximate match.
89.57
Approximate match.

Similar Procedure Codes

Questions About 4A0204Z

Is 4A0204Z a billable code?

Yes. 4A0204Z is a complete seven-character ICD-10-PCS code, specific enough to report Measurement of Cardiac Electrical Activity, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 4A0204Z mean?

4A0204Z breaks down character by character: the 1st character 4 is the Section (Measurement and Monitoring); the 2nd character A is the Body System (Physiological Systems); the 3rd character 0 is the Operation (Measurement); the 4th character 2 is the BodySystem (Cardiac); the 5th character 0 is the Approach (Open); the 6th character 4 is the Function/Device (Electrical Activity); the 7th character Z is the Qualifier (No Qualifier).

What is the ICD-9-PCS equivalent of 4A0204Z?

Under the General Equivalence Mappings, Measurement of Cardiac Electrical Activity, Open Approach crosswalks to ICD-9-PCS 89.52 and 89.57. The mapping is approximate, so confirm it fits the documentation.