ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.0 > T63.01 T63.01 Toxic effect of rattlesnake venom Non-Billable/Non-Specific Codes T63.011Toxic effect of rattlesnake venom, accidental (unintentional)T63.011A..., initial encounterT63.011D..., subsequent encounterT63.011S..., sequelaT63.012Toxic effect of rattlesnake venom, intentional self-harmT63.012A..., initial encounterT63.012D..., subsequent encounterT63.012S..., sequelaT63.013Toxic effect of rattlesnake venom, assaultT63.013A..., initial encounterT63.013D..., subsequent encounterT63.013S..., sequelaT63.014Toxic effect of rattlesnake venom, undeterminedT63.014A..., initial encounterT63.014D..., subsequent encounterT63.014S..., sequela