T18
Foreign body in alimentary tract
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 3 never code together
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 3
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 8
- Food (any type) in
- Asphyxia, asphyxiation
- by
- food (bone) (seed) T18
- by
- Aspiration
- food (any type) (into respiratory tract) (with asphyxia, obstruction respiratory tract, suffocation) T18
- Choked, choking (on) (any object except food or vomitus)
- food (bone) (seed) T18
- Compression
- trachea by
- food (lodged in esophagus) T18
- trachea by
- Suffocation (accidental) (by external means) (by pressure) (mechanical) T71
- due to, by
- food, any type (aspiration) (ingestion) (inhalation) T18
- due to, by
- Inhalation
- food (any type) (into respiratory tract) (with asphyxia, obstruction respiratory tract, suffocation) T18
- Interruption of respiration (by)
- food (lodged in esophagus) T18
Subordinate codes 8
T18.0 Foreign body in mouth T18.1 Foreign body in esophagus T18.2 Foreign body in stomach T18.3 Foreign body in small intestine T18.4 Foreign body in colon T18.5 Foreign body in anus and rectum T18.8 Foreign body in other parts of alimentary tract T18.9 Foreign body of alimentary tract, part unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.