ICD-10-CM > S00-T88 > S90-S99 > S90 > S90.8 > S90.86 S90.86 Insect bite (nonvenomous) of foot Non-Billable/Non-Specific Codes S90.861Insect bite (nonvenomous), right footS90.861A..., initial encounterS90.861D..., subsequent encounterS90.861S..., sequelaS90.862Insect bite (nonvenomous), left footS90.862A..., initial encounterS90.862D..., subsequent encounterS90.862S..., sequelaS90.869Insect bite (nonvenomous), unspecified footS90.869A..., initial encounterS90.869D..., subsequent encounterS90.869S..., sequela