ICD-10-CM > R00-R99 > R25-R29 > R29 > R29.7 > R29.71 R29.71 NIHSS score 10-19 Non-Billable/Non-Specific Codes R29.710NIHSS score 10R29.711NIHSS score 11R29.712NIHSS score 12R29.713NIHSS score 13R29.714NIHSS score 14R29.715NIHSS score 15R29.716NIHSS score 16R29.717NIHSS score 17R29.718NIHSS score 18R29.719NIHSS score 19