ICD-10-CM > S00-T88 > S60-S69 > S60 > S60.5 > S60.52 > S60.521 S60.521 Blister (nonthermal) of right hand Non-Billable/Non-Specific Codes S60.521A..., initial encounterS60.521D..., subsequent encounterS60.521S..., sequela