NIHSS score 30

This code indicates a National Institutes of Health Stroke Scale (NIHSS) score of 30, signifying a severe neurological deficit typically observed in patients experiencing an acute ischemic stroke. The NIHSS is a standardized, systematic assessment tool used to quantify the severity of stroke-related neurological impairment. A score of 30 suggests profound neurological compromise affecting multiple domains.

Use this code when documentation explicitly states an NIHSS score of 30, usually in the context of an acute stroke evaluation. This score is often recorded during initial assessment in the emergency department or upon admission for stroke management. Supporting documentation includes physician notes, neurological assessment forms, or stroke scale worksheets.

• Always ensure the specific NIHSS score of "30" is clearly documented; do not extrapolate from descriptive terms like "severe stroke" alone.
• This code is for the score itself and should be sequenced after the primary diagnosis for the acute stroke (e.g., I63.x).
• Avoid using this code if a different NIHSS score is documented, as each score has a unique code.