ICD-10-CM T18: Foreign body in alimentary tract

ICD-10-CM Diagnosis Code (2025)

Official Description for T18

Foreign body in alimentary tract

Coding Notes & Guidelines for T18

Excludes2: Not Included Here

foreign body in pharynx (T17.2-)

Excludes2: Not Included Here

foreign body in respiratory tract (T17.-)

Inclusion Terms

Unspecified foreign body in esophagus causing obstruction of respiration

Inclusion Terms

Vomitus in esophagus

Inclusion Terms

Gastric contents in esophagus causing obstruction of respiration

Inclusion Terms
  • Bones in esophagus
  • Seeds in esophagus
Inclusion Terms

Food in esophagus causing obstruction of respiration

Inclusion Terms

Other foreign body in esophagus causing obstruction of respiration

Inclusion Terms

Foreign body in rectosigmoid (junction)

Inclusion Terms
  • Foreign body in digestive system NOS
  • Swallowed foreign body NOS
7th Character Guidance

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

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for T18):

T18.0 - Foreign body in mouth T18.1 - Foreign body in esophagus T18.10 - Unspecified foreign body in esophagus T18.100 - Unspecified foreign body in esophagus causing compression of trachea T18.108 - Unspecified foreign body in esophagus causing other injury T18.11 - Gastric contents in esophagus T18.110 - Gastric contents in esophagus causing compression of trachea T18.118 - Gastric contents in esophagus causing other injury T18.12 - Food in esophagus T18.120 - Food in esophagus causing compression of trachea T18.128 - Food in esophagus causing other injury T18.19 - Other foreign object in esophagus T18.190 - Other foreign object in esophagus causing compression of trachea T18.198 - Other foreign object in esophagus causing other injury 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

About ICD-10-CM Code T18 (Foreign body in alimentary tract)

ICD-10-CM code T18 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM T18 became effective on October 1, 2024.

This page provides detailed information about T18 - Foreign body in alimentary tract. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Foreign body in alimentary tract.