ICD-10-CM > S00-T88 > T51-T65 > T61 > T61.9 > T61.91 T61.91 Toxic effect of unspecified seafood, accidental (unintentional) Non-Billable/Non-Specific Codes T61.91XA..., initial encounterT61.91XD..., subsequent encounterT61.91XS..., sequela