ICD-10-CM > S00-T88 > S80-S89 > S80 > S80.8 > S80.82 > S80.829 S80.829 Blister (nonthermal), unspecified lower leg Non-Billable/Non-Specific Codes S80.829A..., initial encounterS80.829D..., subsequent encounterS80.829S..., sequela