ICD-10-CM > S00-T88 > S40-S49 > S40 > S40.8 > S40.86 S40.86 Insect bite (nonvenomous) of upper arm Non-Billable/Non-Specific Codes S40.861Insect bite (nonvenomous) of right upper armS40.861A..., initial encounterS40.861D..., subsequent encounterS40.861S..., sequelaS40.862Insect bite (nonvenomous) of left upper armS40.862A..., initial encounterS40.862D..., subsequent encounterS40.862S..., sequelaS40.869Insect bite (nonvenomous) of unspecified upper armS40.869A..., initial encounterS40.869D..., subsequent encounterS40.869S..., sequela