ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.6 > T63.69 > T63.691 T63.691 Toxic effect of contact with other venomous marine animals, accidental (unintentional) Non-Billable/Non-Specific Codes T63.691A..., initial encounterT63.691D..., subsequent encounterT63.691S..., sequela