4A05XLZMeasurement of Circulatory Volume, External Approach
- Billable / Specific Code
4A05XLZ is a billable ICD-10-PCS procedure code for Measurement of Circulatory Volume, External Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). The root operation Measurement involves determining the level of a physiological or physical function at a point in time. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Other cardiovascular system measurement and monitoring.
Code Identity
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.
| Position | Designation | Value | Meaning |
|---|---|---|---|
| 1 | Section | 4 | Measurement and Monitoring |
| 2 | Body System | A | Physiological Systems |
| 3 | Operation | 0 | Measurement |
| 4 | BodySystem | 5 | Circulatory |
| 5 | Approach | X | External |
| 6 | Function/Device | L | Volume |
| 7 | Qualifier | Z | No Qualifier |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code measurement of the volume circulatory, open the FY 2027 ICD-10-PCS Alphabetic Index at Measurement, then the subterms Circulatory, Volume. The entry lists 4A05XLZ directly as a complete, billable code.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Questions About 4A05XLZ
Is 4A05XLZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Measurement of Circulatory Volume, External Approach on inpatient claims from October 1, 2026 through September 30, 2027.
What is the ICD-10-PCS code for measurement of the volume circulatory?
The FY 2027 ICD-10-PCS Alphabetic Index entry Measurement, Circulatory, Volume is a direct entry for 4A05XLZ, Measurement of Circulatory Volume, External Approach, billable on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 4A05XLZ mean?
The code 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 5 is the BodySystem (Circulatory); the 5th character X is the Approach (External); the 6th character L is the Function/Device (Volume); the 7th character Z is the Qualifier (No Qualifier).
What is the ICD-9-PCS equivalent of 4A05XLZ?
Under the General Equivalence Mappings, Measurement of Circulatory Volume, External Approach crosswalks to ICD-9-PCS 99.99 (Other miscellaneous procedures). The mapping is approximate, so confirm it fits the documentation.
