4A03X5DMeasurement of Arterial Flow, Intracranial, External Approach

Measurement and Monitoring›Physiological Systems›Measurement
  • Billable / Specific Code
ICD-10-PCS 4A03X5D
CMS Source: FY 2027 ICD-10-PCS dataset. Effective Oct 1, 2026 – Sep 30, 2027.FacebookXLinkedInPrint

4A03X5D is a billable ICD-10-PCS procedure code for Measurement of Arterial Flow, Intracranial, 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. The Alphabetic Index lists this code under ContaCT software (Measurement of intracranial arterial flow). In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Other cardiovascular system measurement and monitoring.

Code Identity

ICD-10-PCS Code
4A03X5D
Billable Status
Yes — Valid for Submission
Code Describes
Measurement of Arterial Flow, Intracranial, External Approach
Short Description
Measurement of Arterial Flow, Intracranial, Extern Approach
Parent Code
4A0

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
4BodySystem3Arterial
5ApproachXExternal
6Function/Device5Flow
7QualifierDIntracranial

In the ICD-10-PCS Alphabetic Index

The FY 2027 ICD-10-PCS Alphabetic Index refers to 4A03X5D as ContaCT software (Measurement of intracranial arterial flow). These index entries lead to this code:

Measurement, Arterial, Flow, Intracranial
Direct entry for this code
ContaCT software (Measurement of intracranial arterial flow)
Direct entry for this code
Blood pressure
Leads to this code's table
BP (blood pressure)
Leads to this code's table
Arterial pulse tracing
Leads to this code's table
Guidance, catheter placement, EKG
Leads to this code's table
Measurement, Arterial, Flow, Coronary
Leads to this code's table
Measurement, Arterial, Flow, Pulmonary
Leads to this code's table
Measurement, Arterial, Pulse, Coronary
Leads to this code's table
Measurement, Arterial, Flow, Peripheral
Leads to this code's table
Measurement, Arterial, Pulse, Pulmonary
Leads to this code's table
Measurement, Arterial, Pulse, Peripheral
Leads to this code's table
Measurement, Arterial, Sound, Peripheral
Leads to this code's table
Measurement, Arterial, Pressure, Coronary
Leads to this code's table
Measurement, Arterial, Pressure, Pulmonary
Leads to this code's table

To code measurement of the intracranial flow arterial, open the FY 2027 ICD-10-PCS Alphabetic Index at Measurement, then the subterms Arterial, Flow, Intracranial. The entry lists 4A03X5D directly as a complete, billable code.

Browse the full ICD-10-PCS Alphabetic Index →

Clinical Classification (CCSR)

AHRQ groups this procedure code into these clinical categories.

MAM010
Other cardiovascular system measurement and monitoring
Clinical domain: Measurement and Monitoring

Similar Procedure Codes

Questions About 4A03X5D

Is 4A03X5D a billable code?

Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Measurement of Arterial Flow, Intracranial, External Approach on inpatient claims from October 1, 2026 through September 30, 2027.

What is the ICD-10-PCS code for ContaCT software (Measurement of intracranial arterial flow)?

The ICD-10-PCS Alphabetic Index lists ContaCT software (Measurement of intracranial arterial flow) under code 4A03X5D, Measurement of Arterial Flow, Intracranial, External Approach, billable on inpatient claims in fiscal year 2027.

What do the characters in 4A03X5D 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 3 is the BodySystem (Arterial); the 5th character X is the Approach (External); the 6th character 5 is the Function/Device (Flow); the 7th character D is the Qualifier (Intracranial).