R29.72Non-Billable (Header)NIHSS score 20-29Child CodesR29.720NIHSS score 20R29.721NIHSS score 21R29.722NIHSS score 22R29.723NIHSS score 23R29.724NIHSS score 24R29.725NIHSS score 25R29.726NIHSS score 26R29.727NIHSS score 27R29.728NIHSS score 28R29.729NIHSS score 29Code Hierarchy└R29Other symptoms and signs involving the nervous and musculoskeletal systems└R29.7National Institutes of Health Stroke Scale (NIHSS) score└R29.72NIHSS score 20-29└R29.72NIHSS score 20-29