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