ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.3 > S20.36 > S20.363 S20.363 Insect bite (nonvenomous) of bilateral front wall of thorax Non-Billable/Non-Specific Codes S20.363A..., initial encounterS20.363D..., subsequent encounterS20.363S..., sequela