ICD-10 Code F44.4 – Conversion disorder with motor symptom or deficit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code F44.4 – Conversion disorder with motor symptom or deficit
What it is
F44.4 identifies a functional neurological symptom disorder presenting with motor weakness or loss of movement that is not explained by a neurologic disease. Use it when the record describes conversion symptoms affecting voluntary motor function.
Clinical signs
Typical findings include limb weakness, abnormal gait, tremor, paralysis, or poor coordination with an exam that does not match a known structural lesion. Clinical features vary; refer to documentation.
When to use this code
Use F44.4 when the clinician documents conversion disorder, functional weakness, or another motor deficit attributed to a psychogenic or functional cause. It is appropriate when the note clearly separates the symptom from an organic neurologic diagnosis. Check documentation if both functional and neurologic conditions are mentioned.
Do not use for
Do not use this code for confirmed stroke, neuropathy, seizure disorder, or other neurologic disease causing weakness. Do not assign it when the chart only says “weakness” without a documented conversion disorder.
Coding tip
Code the documented motor presentation, and verify that the provider explicitly links it to conversion disorder or functional neurologic symptoms.