ICD-10-CM > S00-T88 > T15-T19 > T18 T18 Foreign body in alimentary tract Non-Billable/Non-Specific Type 2 Excludes foreign body in pharynx (T17.2-) Codes T18.0Foreign body in mouthT18.0XXA..., initial encounterT18.0XXD..., subsequent encounterT18.0XXS..., sequelaT18.1Foreign body in esophagusT18.10Unspecified foreign body in esophagusT18.100Unspecified foreign body in esophagus causing compression of tracheaT18.100A..., initial encounterT18.100D..., subsequent encounterT18.100S..., sequelaT18.108Unspecified foreign body in esophagus causing other injuryT18.108A..., initial encounterT18.108D..., subsequent encounterT18.108S..., sequelaT18.11Gastric contents in esophagusT18.110Gastric contents in esophagus causing compression of tracheaT18.110A..., initial encounterT18.110D..., subsequent encounterT18.110S..., sequelaT18.118Gastric contents in esophagus causing other injuryT18.118A..., initial encounterT18.118D..., subsequent encounterT18.118S..., sequelaT18.12Food in esophagusT18.120Food in esophagus causing compression of tracheaT18.120A..., initial encounterT18.120D..., subsequent encounterT18.120S..., sequelaT18.128Food in esophagus causing other injuryT18.128A..., initial encounterT18.128D..., subsequent encounterT18.128S..., sequelaT18.19Other foreign object in esophagusT18.190Other foreign object in esophagus causing compression of tracheaT18.190A..., initial encounterT18.190D..., subsequent encounterT18.190S..., sequelaT18.198Other foreign object in esophagus causing other injuryT18.198A..., initial encounterT18.198D..., subsequent encounterT18.198S..., sequelaT18.2Foreign body in stomachT18.2XXA..., initial encounterT18.2XXD..., subsequent encounterT18.2XXS..., sequelaT18.3Foreign body in small intestineT18.3XXA..., initial encounterT18.3XXD..., subsequent encounterT18.3XXS..., sequelaT18.4Foreign body in colonT18.4XXA..., initial encounterT18.4XXD..., subsequent encounterT18.4XXS..., sequelaT18.5Foreign body in anus and rectumT18.5XXA..., initial encounterT18.5XXD..., subsequent encounterT18.5XXS..., sequelaT18.8Foreign body in other parts of alimentary tractT18.8XXA..., initial encounterT18.8XXD..., subsequent encounterT18.8XXS..., sequelaT18.9Foreign body of alimentary tract, part unspecifiedT18.9XXA..., initial encounterT18.9XXD..., subsequent encounterT18.9XXS..., sequela