ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.1 > S20.16 S20.16 Insect bite (nonvenomous) of breast Non-Billable/Non-Specific Codes S20.161Insect bite (nonvenomous) of breast, right breastS20.161A..., initial encounterS20.161D..., subsequent encounterS20.161S..., sequelaS20.162Insect bite (nonvenomous) of breast, left breastS20.162A..., initial encounterS20.162D..., subsequent encounterS20.162S..., sequelaS20.169Insect bite (nonvenomous) of breast, unspecified breastS20.169A..., initial encounterS20.169D..., subsequent encounterS20.169S..., sequela