NIHSS score 19

This code indicates a National Institutes of Health Stroke Scale (NIHSS) score of 19, reflecting a severe neurological deficit typically observed in patients experiencing an acute ischemic stroke. The NIHSS is a standardized tool used to quantify stroke severity based on various neurological assessments.

Use this code when documentation explicitly states an NIHSS score of 19 following an acute stroke event. This score signifies significant impairment, often correlating with substantial motor, sensory, or cognitive deficits. It is crucial for tracking stroke severity and guiding treatment decisions.

• Ensure the documentation clearly specifies "NIHSS score 19"; do not infer from descriptive language alone.
• Always sequence this code after the primary diagnosis for the acute stroke (e.g., I63.x).
• Avoid using this code if a more specific NIHSS score (e.g., R29.711-R29.718, R29.710) is documented.