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R29.740

Billable

NIHSS score 40

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A standardized neurological assessment score of 40 or higher used to measure stroke severity, indicating severe neurological impairment.

Coding Tips

  • •NIHSS scores of 40+ represent the most severe category and should be linked to a stroke diagnosis code
  • •Ensure the score is from an actual NIHSS assessment performed by a qualified healthcare provider, not an estimate

Code Hierarchy

└R29Other symptoms and signs involving the nervous and musculoskeletal systems└R29.7National Institutes of Health Stroke Scale (NIHSS) score└R29.74NIHSS score 40-42└R29.740NIHSS score 40
└R29.740NIHSS score 40

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