ICD-10-PCS 2027 procedure code
4A03X5DMeasurement of Arterial Flow, Intracranial, External Approach
Short description: Measurement of Arterial Flow, Intracranial, Extern Approach
Code last changed in FY2021 (effective October 1, 2020). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data
About 4A03X5D
4A03X5D is the ICD-10-PCS code for a measurement procedure on the arterial using an external approach with flow (qualifier: intracranial). In ICD-10-PCS, measurement means determining the level of a physiological or physical function at a point in time.
It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.
It was added in FY2021, effective October 1, 2020.
What each character means
- 1. Section
- 4Measurement and Monitoring
- 2. Body System
- APhysiological Systems
- 3. Operation
- 0Measurement
Determining the level of a physiological or physical function at a point in time
- 4. Body System
- 3Arterial
- 5. Approach
- XExternal
Procedures performed directly on the skin or mucous membrane and procedures performed indirectly by the application of external force through the skin or mucous membrane
- 6. Function / Device
- 5Flow
- 7. Qualifier
- DIntracranial
Other versions of this procedure
Different qualifier
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2021 (effective 10/1/2020): Added
- No changes since FY2021.
Common questions about 4A03X5D
Is 4A03X5D a valid ICD-10-PCS code for 2027?
- Yes. 4A03X5D is valid for inpatient procedures from October 1, 2026 through September 30, 2027.