T18.100A Unspecified foreign body in esophagus causing compression of trachea, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T18.100 with 7th character A (initial encounter).

Applies from T18 Foreign body in alimentary tract

Excludes2 (not included here)

• foreign body in pharynx (T17.2-)

7th character note

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

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from T18.1 Foreign body in esophagus

Excludes2 (not included here)

• foreign body in respiratory tract (T17.-)

Applies from T18.100 Unspecified foreign body in esophagus causing compression of trachea

Applicable to

• Unspecified foreign body in esophagus causing obstruction of respiration

Code annotations containing back-references to T18.100A

Back-references to T18.1

• Use Additional: T56 Toxic effect of metals ("code to identify any retained metal foreign body, if applicable (Z18.0-, T18.1-)")

Back-references to T18

• Type 2 Excludes: Z03.82 Encounter for observation for suspected foreign body ruled out ("foreign body in alimentary tract (T18)")
• Type 1 Excludes: Z18 Retained foreign body fragments ("foreign body entering through orifice (T15-T19)")

Diagnosis Index entries for T18.100A

• Foreign body › esophagus › causing › tracheal compression

Nearby codes

• T18.0XXD Foreign body in mouth, subsequent encounter
• T18.0XXS Foreign body in mouth, sequela
• T18.1 Foreign body in esophagus
• T18.10 Unspecified foreign body in esophagus
• T18.100 Unspecified foreign body in esophagus causing compression of trachea
• T18.100A Unspecified foreign body in esophagus causing compression of trachea, initial encounter (this code)
• T18.100D Unspecified foreign body in esophagus causing compression of trachea, subsequent encounter
• T18.100S Unspecified foreign body in esophagus causing compression of trachea, sequela
• T18.108 Unspecified foreign body in esophagus causing other injury
• T18.108A Unspecified foreign body in esophagus causing other injury, initial encounter
• T18.108D Unspecified foreign body in esophagus causing other injury, subsequent encounter