Brain stem stroke syndrome

This code signifies a stroke that specifically affects the brainstem, leading to a constellation of neurological deficits. These deficits often include cranial nerve palsies, motor and sensory disturbances, and impaired consciousness, depending on the specific brainstem structures involved.

Use this code when documentation clearly indicates an ischemic or hemorrhagic stroke localized to the brainstem. Supporting documentation should detail the neurological signs and symptoms consistent with brainstem involvement, such as locked-in syndrome, Wallenberg syndrome, or other specific brainstem syndromes.

• Ensure the documentation specifies "brainstem" as the stroke location; do not assume based on symptoms alone.
• Always code the specific type of stroke (e.g., ischemic, hemorrhagic) first, if known, followed by this code.
• Distinguish from other cerebrovascular accidents affecting different brain regions; this code is exclusive to brainstem involvement.