ICD-10-CM > S00-T88 > S80-S89 > S84 > S84.9 > S84.90 S84.90 Injury of unspecified nerve at lower leg level, unspecified leg Non-Billable/Non-Specific Codes S84.90XA..., initial encounterS84.90XD..., subsequent encounterS84.90XS..., sequela