ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.3 > T63.39 > T63.391 T63.391 Toxic effect of venom of other spider, accidental (unintentional) Non-Billable/Non-Specific Codes T63.391A..., initial encounterT63.391D..., subsequent encounterT63.391S..., sequela