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ICD-10-CM 2027

ICD-10 code for swallowed foreign body

T18.9

Foreign body of alimentary tract, part unspecified

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Foreign body › swallowed”. Page updated September 29, 2026.

About coding swallowed foreign body

The ICD-10-CM code for swallowed foreign body is T18.9 (Foreign body of alimentary tract, part unspecified).

Within T18, choose T18.9 (of alimentary tract, part unspecified) 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 in other parts of alimentary tract (T18.8).

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.

Common questions about swallowed foreign body ICD-10 codes

What is the ICD-10 code for swallowed foreign body?

T18.9 — Foreign body of alimentary tract, part unspecified (a header code; report a more specific subcode).

Is T18.9 billable?

No. T18.9 is a header code. Report one of its more specific subcodes instead.