S20.1 - Other and unspecified superficial injuries of breast
S20.16 - Insect bite (nonvenomous) of breast
S20.161 - Insect bite (nonvenomous) of breast, right breast
S20.162 - Insect bite (nonvenomous) of breast, left breast
S20.169 - Insect bite (nonvenomous) of breast, unspecified breast