MCMedicalCodingSoftware
T18

T18: Foreign body in alimentary tract

Non-billable headerICD-10-CM

T18 is a non-billable header ICD-10-CM code for foreign body in alimentary tract. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T18

A
initial encounter
D
subsequent encounter
S
sequela

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • foreign body in pharynx (T17.2-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Aspiration›food(any type) (into respiratory tract) (with asphyxia, obstruction respiratory tract, suffocation)
  • Choked, choking›food(bone) (seed)
  • Food in›air passages(with asphyxia, obstruction, or suffocation)
  • Food in›alimentary tract causing asphyxia(due to compression of trachea)
  • Asphyxia, asphyxiation›by›food(bone) (seed)
  • Compression›trachea by›food(lodged in esophagus)

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T18

8 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.