ICD-10-CM > S00-T88 > S00-S09 > S00 > S00.8 > S00.82 S00.82 Blister (nonthermal) of other part of head Non-Billable/Non-Specific Codes S00.82XA..., initial encounterS00.82XD..., subsequent encounterS00.82XS..., sequela