2026 ICD-10-CM Diagnosis Code T18.2XXSForeign body in stomach, sequela

ICD-10-CM Codes›S00–T88›T15-T19›T18

ICD-10-CM T18.2XXS
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T18.2XXS is a billable ICD-10-CM diagnosis code for foreign body in stomach, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 913 through 914. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.

Code Identity

ICD-10-CM Code
T18.2XXS
Billable Status
Yes — Valid for Submission
Code Describes
Foreign body in stomach, sequela
Short Description
Foreign body in stomach, sequela
Same as the full description in the CMS dataset.
Parent Code
T18.2
Foreign body in stomach

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT15-T19Effects of foreign body entering through natural orifice
CategoryT18Foreign body in alimentary tract
This CodeT18.2XXSForeign body in stomach, sequela

Present on Admission (POA)Billing

T18.2XXS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bezoar in stomach
  • Foreign body at cardia
  • Foreign body in stomach
  • Gastric concretion
  • Gastrointestinal fungal ball
  • Injury of stomach without perforation following ingestion of foreign material
  • Perforating wound of stomach following ingestion of foreign material
  • Phytobezoar
  • Postgastrectomy phytobezoar
  • Traumatic perforation of stomach
  • Trichobezoar
  • Trichobezoar in stomach

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 2026, published by CMS and the National Center for Health Statistics.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ073
Injury, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Foreign Body in Stomach

    extraneous material located within the stomach.

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 T18.2XXS to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
908.5 Late eff FB in orifice
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T18.2XXSOverview

Is T18.2XXS (Foreign body in stomach) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report foreign body in stomach, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character S in T18.2XXS mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the foreign body in stomach itself has resolved, not the original event.

What MS-DRG does T18.2XXS group to?

When foreign body in stomach, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 913, 914, with relative weights from 0.8855 to 1.6346 depending on complications. Higher weights mean higher Medicare reimbursement.

Is T18.2XXS exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for foreign body in stomach, sequela on inpatient claims.

What is the ICD-9 equivalent of T18.2XXS?

Under the General Equivalence Mappings, foreign body in stomach, sequela converts to ICD-9-CM 908.5 (late eff FB in orifice). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.