AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2025 Issue 2; Ask the Editor
Unilateral Weakness due to Complex Migraine
A patient with left side facial weakness and numbness, left arm and left leg weakness, right tongue deviation, left eye photophobia, and twitching on the left side of the face, was admitted for stroke evaluation. Imaging showed no acute intracranial pathology, and the patient was diagnosed with left-sided facial droop/left-sided weakness secondary to complex migraine (CM). Is it appropriate to assign a code for hemiplegia when left-sided weakness is secondary to CM? What is the correct code assignment for left-sided weakness secondary to CM? ...
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Article Overview
This short coding guidance article discusses a neurological presentation evaluated for stroke and later attributed to complex migraine. It is relevant to coders working with migraine-related neurologic symptoms, documentation linkage, and ICD-10-CM assignment. The article also cites Coding Clinic guidance to support the coding discussion.
Why This Topic Matters
It helps readers understand how documented neurologic weakness associated with migraine is addressed in coding guidance and why provider documentation matters for diagnosis assignment.
What You Will Learn
- How a neurologic presentation may be documented when stroke is ruled out and migraine is identified
- How provider linkage between a symptom and a migraine diagnosis affects coding considerations
- What external coding guidance is cited in support of the discussion
- Which diagnosis category is referenced for the final code assignment
Who Should Read This
- Medical coders
- Coding auditors
- Clinical documentation integrity specialists
- Revenue cycle professionals
- Health information management staff
Codes Discussed
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