ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.4 > T63.43 > T63.434 T63.434 Toxic effect of venom of caterpillars, undetermined Non-Billable/Non-Specific Codes T63.434A..., initial encounterT63.434D..., subsequent encounterT63.434S..., sequela