ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.0 > T63.02 > T63.021 T63.021 Toxic effect of coral snake venom, accidental (unintentional) Non-Billable/Non-Specific Applicable To Toxic effect of coral snake venom NOS Codes T63.021A..., initial encounterT63.021D..., subsequent encounterT63.021S..., sequela