ICD-10-CM > S00-T88 > T51-T65 > T63 > T63.6 > T63.61 > T63.611 T63.611 Toxic effect of contact with Portuguese Man-o-war, accidental (unintentional) Non-Billable/Non-Specific Codes T63.611A..., initial encounterT63.611D..., subsequent encounterT63.611S..., sequela