ICD-10-CM > S00-T88 > T51-T65 > T61 > T61.8 > T61.8X > T61.8X4 T61.8X4 Toxic effect of other seafood, undetermined Non-Billable/Non-Specific Codes T61.8X4A..., initial encounterT61.8X4D..., subsequent encounterT61.8X4S..., sequela