ICD-10-CM > S00-T88 > S40-S49 > S40 > S40.2 > S40.22 > S40.222 S40.222 Blister (nonthermal) of left shoulder Non-Billable/Non-Specific Codes S40.222A..., initial encounterS40.222D..., subsequent encounterS40.222S..., sequela