ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.4 > S20.46 > S20.462 S20.462 Insect bite (nonvenomous) of left back wall of thorax Non-Billable/Non-Specific Codes S20.462A..., initial encounterS20.462D..., subsequent encounterS20.462S..., sequela