ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.1 > S20.16 > S20.161 S20.161 Insect bite (nonvenomous) of breast, right breast Non-Billable/Non-Specific Codes S20.161A..., initial encounterS20.161D..., subsequent encounterS20.161S..., sequela