T18.5 Foreign body in anus and rectumNon-billable ICD-10-CM code.
Z03.82 Encounter for observation for suspected foreign body ruled out ("foreign body in alimentary tract (T18)")Z18 Retained foreign body fragments ("foreign body entering through orifice (T15-T19)")T18.3XXS Foreign body in small intestine, sequelaT18.4 Foreign body in colonT18.4XXA Foreign body in colon, initial encounterT18.4XXD Foreign body in colon, subsequent encounterT18.4XXS Foreign body in colon, sequelaT18.5 Foreign body in anus and rectum (this code)T18.5XXA Foreign body in anus and rectum, initial encounterT18.5XXD Foreign body in anus and rectum, subsequent encounterT18.5XXS Foreign body in anus and rectum, sequelaT18.8 Foreign body in other parts of alimentary tractT18.8XXA Foreign body in other parts of alimentary tract, initial encounter