ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.4 > T63.43 > T63.431 T63.431 Toxic effect of venom of caterpillars, accidental (unintentional) Non-Billable/Non-Specific Codes T63.431A..., initial encounterT63.431D..., subsequent encounterT63.431S..., sequela