ICD-10-CM > S00-T88 > T15-T19 > T18 > T18.9 T18.9 Foreign body of alimentary tract, part unspecified Non-Billable/Non-Specific Applicable To Foreign body in digestive system NOSSwallowed foreign body NOS Codes T18.9XXA..., initial encounterT18.9XXD..., subsequent encounterT18.9XXS..., sequela