AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2020 Issue 4; New/Revised ICD-10-CM Codes
Measurement of Intracranial Arterial Flow
In table 4A0, Physiological Systems, Measurement, existing qualifier D Intracranial, has been applied to the Body System Arterial, the external approach, and the function value Flow. This change will identify the use of non-invasive techniques for measuring cerebral artery flow/occlusion, such as software that analyzes computed tomography angiogram (CTA) of the head and neck for large vessel occlusion (LVO). Body System Approach Function/Device Qualifier 3 Arterial X External 5 Flow D Intracranial For example, ContaCT is a radiological computer-assisted triage and notification software system that analyzes CTA brain images and sends notifications to a neurovascular specialist(s) when a suspected...
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Article Overview
This article describes a coding update for non-invasive measurement of intracranial arterial flow in an imaging and physiological systems context. It is intended for coding professionals and clinical teams who work with neurovascular imaging, acute stroke workflows, and classification updates affecting computerized analysis of CTA studies. The article also notes the broader operational context in which automated image-analysis software may support notification pathways, while referring readers to separate reporting for CTA imaging.
Why This Topic Matters
Understanding this update helps readers identify when intracranial arterial flow measurement is being addressed in the coding system and how it relates to neurovascular imaging and stroke care workflows. It is relevant for accurate categorization of technology-supported assessment services and for distinguishing the measurement concept from separately reported imaging procedures.
What You Will Learn
- How an intracranial arterial flow measurement update is described within a physiological systems coding framework.
- The relationship between non-invasive cerebrovascular assessment and acute stroke imaging workflows.
- How automated image-analysis tools fit into the broader clinical context discussed by the article.
- The distinction between the measurement concept and separately reported CTA imaging.
Who Should Read This
- Medical coders
- Coding auditors
- Health information management professionals
- Clinical documentation specialists
- Radiology and neurovascular workflow stakeholders
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