2021 ICD-10-CM Diagnosis Code T18

Foreign body in alimentary tract

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • T18 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM T18 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of T18 - other international versions of ICD-10 T18 may differ.
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (T18) and the excluded code together.
  • foreign body in pharynx (
    ICD-10-CM Diagnosis Code T17.2

    Foreign body in pharynx

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Foreign body in nasopharynx
    • Foreign body in throat NOS
    T17.2-
    )
The following code(s) above T18 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to T18:
  • S00-T88
    2021 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    Note
    • 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
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
  • T15-T19
    2021 ICD-10-CM Range T15-T19

    Effects of foreign body entering through natural orifice

    Type 2 Excludes
    • foreign body accidentally left in operation wound (T81.5-)
    • foreign body in penetrating wound - See open wound by body region
    • residual foreign body in soft tissue (M79.5)
    • splinter, without open wound - See superficial injury by body region
    Effects of foreign body entering through natural orifice
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to T18:
  • Type 2 Excludes: Z03.82
    ICD-10-CM Diagnosis Code Z03.82

    Encounter for observation for suspected foreign body ruled out

      2021 - New Code Non-Billable/Non-Specific Code
    Type 1 Excludes
    • retained foreign body (Z18.-)
    • retained foreign body in eyelid (H02.81)
    • residual foreign body in soft tissue (M79.5)
    Type 2 Excludes
    • confirmed foreign body ingestion or aspiration including:
    • foreign body in alimentary tract (T18)
    • foreign body in ear (T16)
    • foreign body on external eye (T15)
    • foreign body in respiratory tract (T17)

External Cause Index entries containing back-references to T18:
  • Asphyxia, asphyxiation
    • by
      • food T18 (bone) (seed) - see categories T17 and
  • Aspiration
    • food T18 (any type) (into respiratory tract) (with asphyxia, obstruction respiratory tract, suffocation) - see categories T17 and
  • Bean in nose T18 - see categories T17 and
  • Choked, choking (on) (any object except food or vomitus)
    • food T18 (bone) (seed) - see categories T17 and
  • Compression
    • trachea by
      • food T18 (lodged in esophagus) - see categories T17 and
  • Food (any type)
    • air passages T18 (with asphyxia, obstruction, or suffocation) - see categories T17 and
    • alimentary tract causing asphyxia T18 (due to compression of trachea) - see categories T17 and
  • Inhalation
    • food T18 (any type) (into respiratory tract) (with asphyxia, obstruction respiratory tract, suffocation) - see categories T17 and
  • Interruption of respiration (by)
    • food T18 (lodged in esophagus) - see categories T17 and
  • Suffocation (accidental) (by external means) (by pressure) (mechanical) T71
    - see also category
    ICD-10-CM Diagnosis Code T71

    Asphyxiation

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Applicable To
    • Mechanical suffocation
    • Traumatic suffocation
    Type 1 Excludes
    • acute respiratory distress (syndrome) (J80)
    • anoxia due to high altitude (T70.2)
    • asphyxia NOS (R09.01)
    • asphyxia from carbon monoxide (T58.-)
    • asphyxia from inhalation of food or foreign body (T17.-)
    • asphyxia from other gases, fumes and vapors (T59.-)
    • respiratory distress (syndrome) in newborn (P22.-)
    • due to, by
      • food, any type T18 (aspiration) (ingestion) (inhalation) - see categories T17 and

ICD-10-CM Codes Adjacent To T18
T17.928S …… sequela
T17.99 Other foreign object in respiratory tract, part unspecified
T17.990 Other foreign object in respiratory tract, part unspecified in causing asphyxiation
T17.990A …… initial encounter
T17.990D …… subsequent encounter
T17.990S …… sequela
T17.998 Other foreign object in respiratory tract, part unspecified causing other injury
T17.998A …… initial encounter
T17.998D …… subsequent encounter
T17.998S …… sequela
T18 Foreign body in alimentary tract
T18.0 Foreign body in mouth
T18.0XXA …… initial encounter
T18.0XXD …… subsequent encounter
T18.0XXS …… 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 …… initial encounter
T18.100D …… subsequent encounter
T18.100S …… sequela

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.