NIHSS score 17

This code indicates a National Institutes of Health Stroke Scale (NIHSS) score of 17, reflecting a severe neurological deficit in a patient who has experienced an acute ischemic stroke. The NIHSS is a systematic assessment tool used to quantify stroke-related neurological impairment, with higher scores indicating greater severity.

Use this code when documentation explicitly states an NIHSS score of 17, typically recorded during the initial evaluation of a patient with an acute stroke. This score is crucial for guiding treatment decisions, such as eligibility for thrombolytic therapy or mechanical thrombectomy, and for predicting patient outcomes.

• Always ensure the NIHSS score is clearly documented by the physician.
• Do not assign this code without a specific, documented NIHSS score.
• Sequence this code after the definitive diagnosis of the acute stroke (e.g., I63.x).