ICD-10-CM > S00-T88 > S50-S59 > S50 > S50.8 > S50.82 > S50.822 S50.822 Blister (nonthermal) of left forearm Non-Billable/Non-Specific Codes S50.822A..., initial encounterS50.822D..., subsequent encounterS50.822S..., sequela