T18.8Foreign body in other parts of alimentary tract

T18.8 is the ICD-10-CM diagnosis code for foreign body in other parts of alimentary tract. It belongs to category T18 (foreign body in alimentary tract), block T15-T19 (effects of foreign body entering through natural orifice) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within T18, choose T18.8 (in other parts of alimentary tract) only when documentation doesn't support a more specific option: in mouth (T18.0), in esophagus (T18.1), in stomach (T18.2), in small intestine (T18.3), in colon (T18.4), in anus and rectum (T18.5) and of alimentary tract, part unspecified (T18.9).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.