ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.5 > T63.59 > T63.591 T63.591 Toxic effect of contact with other venomous fish, accidental (unintentional) Non-Billable/Non-Specific Codes T63.591A..., initial encounterT63.591D..., subsequent encounterT63.591S..., sequela