ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.6 > S63.60 S63.60 Unspecified sprain of thumb Non-Billable/Non-Specific Codes S63.601Unspecified sprain of right thumbS63.601A..., initial encounterS63.601D..., subsequent encounterS63.601S..., sequelaS63.602Unspecified sprain of left thumbS63.602A..., initial encounterS63.602D..., subsequent encounterS63.602S..., sequelaS63.609Unspecified sprain of unspecified thumbS63.609A..., initial encounterS63.609D..., subsequent encounterS63.609S..., sequela