ICD-10-CM > S00-T88 > T51-T65 > T61 > T61.0 > T61.01 T61.01 Ciguatera fish poisoning, accidental (unintentional) Non-Billable/Non-Specific Codes T61.01XA..., initial encounterT61.01XD..., subsequent encounterT61.01XS..., sequela