T18
Non-billableForeign body in alimentary tract
Foreign body in alimentary tract
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •foreign body accidentally left in operation woundT81.5
- foreign body in penetrating wound - See open wound by body region
- •residual foreign body in soft tissueM79.5
- splinter, without open wound - See superficial injury by body region
- •foreign body in pharynxT17.2
Use Additional Code
Additional codes that should follow this code
7th Character Definitions
- A - initial encounter
- D - subsequent encounter
- S - sequela
Child Codes (8)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(10)
UMLS
- Foreign Body in Gastrointestinal TractC0016546
- Foreign body in GI tractC0016546
- Foreign body in alimentary tractC0016546
- Foreign body in digestive system NOSC0016546
- Foreign body in digestive system, unspecifiedC0016546
- Foreign body in digestive tractC0016546
- Foreign body in digestive tract (disorder)C0016546
- Foreign body in gastrointestinal tractC0016546
- Foreign body of alimentary tract, part unspecifiedC0016546
- Foreign body of digestive structureC0016546
Frequently Asked Questions
What is the ICD-10 code for foreign body in alimentary tract?
The ICD-10-CM code for foreign body in alimentary tract is T18. The full clinical description is "Foreign body in alimentary tract". T18 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code T18 mean?
ICD-10-CM code T18 represents “Foreign body in alimentary tract”. It is classified under Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes and is a non-billable header code. Use a more specific child code for billing purposes.
Is T18 a billable code?
No, T18 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 8 child codes under T18.
What chapter is T18 in?
T18 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).
What codes cannot be used with T18?
T18 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71).
What are the subcategories under T18?
T18 has 8 child codes, including: 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), and 4 more.
Are additional codes required with T18?
Yes, when using T18, also report: any retained foreign body, if applicable (Z18.-); code, if known, for foreign body entering into or through a natural orifice (W44.-).
What are the UMLS CUIs for T18?
T18 is linked to 1 UMLS Concept Unique Identifier: C0016546. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does T18 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like foreign body in alimentary tract affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of T18?
T18 maps to the ICD-11 code: ND73.Z (Foreign body in alimentary tract, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.