ICD-10-CM > S00-T88 > T51-T65 > T61 > T61.7 > T61.77 > T61.771 T61.771 Other fish poisoning, accidental (unintentional) Non-Billable/Non-Specific Codes T61.771A..., initial encounterT61.771D..., subsequent encounterT61.771S..., sequela