ICD-10-CM > S00-T88 > S70-S79 > S70 > S70.3 > S70.32 S70.32 Blister (nonthermal) of thigh Non-Billable/Non-Specific Codes S70.321Blister (nonthermal), right thighS70.321A..., initial encounterS70.321D..., subsequent encounterS70.321S..., sequelaS70.322Blister (nonthermal), left thighS70.322A..., initial encounterS70.322D..., subsequent encounterS70.322S..., sequelaS70.329Blister (nonthermal), unspecified thighS70.329A..., initial encounterS70.329D..., subsequent encounterS70.329S..., sequela