ICD-10-CM > S00-T88 > S30-S39 > S30 > S30.8 > S30.82 > S30.82A S30.82A Blister (nonthermal) of flank Non-Billable/Non-Specific Codes S30.82AA..., initial encounterS30.82AD..., subsequent encounterS30.82AS..., sequela