4A0Measurement and Monitoring, Physiological Systems, Measurement

Measurement and Monitoring›Physiological Systems›Measurement
  • Non-Billable Header
ICD-10-PCS 4A0
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

4A0 is a non-billable ICD-10-PCS code that heads the group for Measurement and Monitoring, Physiological Systems, Measurement, so it cannot be submitted on a claim; a more specific seven-character code is required. 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
4A0
Billable Status
No — Non-Billable Header
Code Describes
Measurement and Monitoring, Physiological Systems, Measurement
Short Description
Msrmt & Monitor, Physiological Sys, Measure

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

Similar Procedure Codes

Questions About 4A0

Is 4A0 a billable code?

No. 4A0 is an incomplete heading for Measurement and Monitoring, Physiological Systems, Measurement and cannot be submitted on a claim. A complete seven-character code is required, such as 4A0002Z, 4A0004Z, and 4A000BZ.