2027 ICD-10-CM Diagnosis Code T18.110AGastric contents in esophagus causing compression of trachea, initial encounter
T18.110A is a billable ICD-10-CM diagnosis code for gastric contents in esophagus causing compression of trachea, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 393 through 395. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Effect of foreign body entering opening, initial encounter; External cause codes: intent of injury, accidental/unintentional; and External cause codes: other specified, classifiable and NEC; initial encounter.
Code Identity
Code Classification
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Foreign body in alimentary tract (T18). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to T18.110A: its own notes plus those printed at T18.1, T18, block T15-T19, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code, if known, for foreign body entering into or through a natural orifice (W44.-)
- code to identify any retained foreign body, if applicable (Z18.-)
Notes
General instructions on how these codes are used.
- 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.
7th Character
Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.
- The appropriate 7th character is to be added to each code from category T18
- Ainitial encounter this code
- Dsubsequent encounter
- Ssequela
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name T18.110A, its category, or a range that includes it.
Excludes2 3
These codes carry an Excludes2 note naming T18.110A: its condition is not part of those codes, and both may be reported when the patient has both.
- Block S10-S19 Injuries to the neckeffects of foreign body in esophagus (T18.1) names T18.1, which includes this code
- Block S20-S29 Injuries to the thoraxeffects of foreign body in esophagus (T18.1) names T18.1, which includes this code
- Z03.82 Encounter for observation for suspected foreign body ruled outforeign body in alimentary tract (T18) names T18, which includes this code
Use Additional Code 1
These codes say to use an additional code from the note, and T18.110A is one of the codes named.
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index; each main term links to its index entry.
- Aspiration
- food (any type) (into respiratory tract) (with asphyxia, obstruction respiratory tract, suffocation)
- Choked, choking (on) (any object except food or vomitus)
- food (bone) (seed)
- Compression
- trachea by
- food (lodged in esophagus)
- Food (any type) in
- air passages (with asphyxia, obstruction, or suffocation)
- Food (any type) in
- alimentary tract causing asphyxia (due to compression of trachea)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Foreign Body in Esophagus
extraneous material located within the esophagus.
Patient EducationClinical
Foreign Bodies
If you've ever gotten a splinter or had sand in your eye, you've had experience with a foreign body. A foreign body is something that is stuck inside you but isn't supposed to be there. You may inhale or swallow a foreign body, or you may get one from an injury to almost any part of your body.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert T18.110A to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T18.110AOverview
Is T18.110A (Gastric contents in esophagus causing compression of trachea) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report gastric contents in esophagus causing compression of trachea, initial encounter on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What does the 7th character A in T18.110A mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for gastric contents in esophagus causing compression of trachea, such as an emergency visit or first evaluation.
What MS-DRG does T18.110A group to?
When gastric contents in esophagus causing compression of trachea, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 394, 395, 393, with relative weights from 0.6379 to 1.5877 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of T18.110A?
Under the General Equivalence Mappings, gastric contents in esophagus causing compression of trachea, initial encounter converts to ICD-9-CM 935.1 (foreign body esophagus) and E911 (resp obstr-food inhal). The mapping is approximate, so confirm the match fits the documentation.
