ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.0 > T63.01 > T63.011 T63.011 Toxic effect of rattlesnake venom, accidental (unintentional) Non-Billable/Non-Specific Applicable To Toxic effect of rattlesnake venom NOS Codes T63.011A..., initial encounterT63.011D..., subsequent encounterT63.011S..., sequela