ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.3 > T63.30 > T63.301 T63.301 Toxic effect of unspecified spider venom, accidental (unintentional) Non-Billable/Non-Specific Codes T63.301A..., initial encounterT63.301D..., subsequent encounterT63.301S..., sequela