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