ICD-10-CM > S00-T88 > S70-S79 > S70 > S70.2 > S70.22 > S70.221 S70.221 Blister (nonthermal), right hip Non-Billable/Non-Specific Codes S70.221A..., initial encounterS70.221D..., subsequent encounterS70.221S..., sequela