Skip to main content
ICD-10/T18.2XXA

T18.2XXA ICD-10-CM Code: Foreign body in stomach, initial encounter

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 393 — OTHER DIGESTIVE SYSTEM DIAGNOSES WITH MCC (MDC 06)
  • MS-DRG 394 — OTHER DIGESTIVE SYSTEM DIAGNOSES WITH CC (MDC 06)
  • MS-DRG 395 — OTHER DIGESTIVE SYSTEM DIAGNOSES WITHOUT CC/MCC (MDC 06)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Foreign body in stomach, initial encounter is a billable ICD-10-CM diagnosis code (T18.2A).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T18.2XXA in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code, if known, for foreign body entering into or through a natural orifice (W44.-)

Change history

No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.

Verify Before Coding

  • Billable — reportable as written.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Contextual Map

Every relationship of T18.2XXA in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88) [Hierarchy]
  • T15-T19 — Effects of foreign body entering through natural orifice [Hierarchy]

Referenced by Excludes2 notes (11)

  • S30 — Superficial injury of abdomen, lower back, pelvis and external genitals [Excludes2](via T18.2.-): “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”
  • S30-S39 — Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39) [Excludes2](via T18.2.-): “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”
  • S31 — Open wound of abdomen, lower back, pelvis and external genitals [Excludes2](via T18.2.-): “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”
  • S32 — Fracture of lumbar spine and pelvis [Excludes2](via T18.2.-): “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”
  • S33 — Dislocation and sprain of joints and ligaments of lumbar spine and pelvis [Excludes2](via T18.2.-): “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”
  • S34 — Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level [Excludes2](via T18.2.-): “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”
  • S35 — Injury of blood vessels at abdomen, lower back and pelvis level [Excludes2](via T18.2.-): “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”
  • S36 — Injury of intra-abdominal organs [Excludes2](via T18.2.-): “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”
  • and 3 more

Clinical classification (CCSR)

  • INJ020 — Effect of foreign body entering opening, initial encounter [CCSR]
  • EXT018 — External cause codes: other specified, classifiable and NEC; initial encounter [CCSR]
  • EXT020 — External cause codes: intent of injury, accidental/unintentional [CCSR]

Potential MS-DRG

  • DRG 393 — OTHER DIGESTIVE SYSTEM DIAGNOSES WITH MCC [MS-DRG]: “OTHER DIGESTIVE SYSTEM DIAGNOSES WITH MCC (MDC 06)”
  • DRG 394 — OTHER DIGESTIVE SYSTEM DIAGNOSES WITH CC [MS-DRG]: “OTHER DIGESTIVE SYSTEM DIAGNOSES WITH CC (MDC 06)”
  • DRG 395 — OTHER DIGESTIVE SYSTEM DIAGNOSES WITHOUT CC/MCC [MS-DRG]: “OTHER DIGESTIVE SYSTEM DIAGNOSES WITHOUT CC/MCC (MDC 06)”

Nearest codes (40)

  • T18 — Foreign body in alimentary tract [Sibling]
  • T18.118S — Gastric contents in esophagus causing other injury, sequela [Sibling]
  • T18.12 — Food in esophagus [Sibling]
  • T18.120 — Food in esophagus causing compression of trachea [Sibling]
  • T18.120A — Food in esophagus causing compression of trachea, initial encounter [Sibling]
  • T18.120D — Food in esophagus causing compression of trachea, subsequent encounter [Sibling]
  • T18.120S — Food in esophagus causing compression of trachea, sequela [Sibling]
  • T18.128 — Food in esophagus causing other injury [Sibling]
  • and 32 more

Referenced by Other Codes

Clinical classification (AHRQ CCSR):INJ020 — Effect of foreign body entering opening, initial encounter (default); EXT018 — External cause codes: other specified, classifiable and NEC; initial encounter; EXT020 — External cause codes: intent of injury, accidental/unintentional.

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 3 MS-DRGs: DRG 393 (MDC 06), DRG 394 (MDC 06), DRG 395 (MDC 06).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Official ICD-10-CM tabular notes on other codes that name T18.2XXA or its code family.

11 Excludes2 notes: S30 (via T18.2.-), S30-S39 (via T18.2.-), S31 (via T18.2.-), S32 (via T18.2.-), S33 (via T18.2.-), S34 (via T18.2.-), S35 (via T18.2.-), S36 (via T18.2.-), S37 (via T18.2.-), S38 (via T18.2.-) and 1 more.

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T18.2XXA require a 7th character?

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

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T18.2XXA in its code family, with their registry titles.

  • T18.198 — Other foreign object in esophagus causing other injury
  • T18.198A — Other foreign object in esophagus causing other injury, initial encounter
  • T18.198D — Other foreign object in esophagus causing other injury, subsequent encounter
  • T18.198S — Other foreign object in esophagus causing other injury, sequela
  • T18.2 — Foreign body in stomach
  • T18.2XXD — Foreign body in stomach, subsequent encounter
  • T18.2XXS — Foreign body in stomach, sequela
  • T18.3 — Foreign body in small intestine
  • T18.3XXA — Foreign body in small intestine, initial encounter
  • T18.3XXD — Foreign body in small intestine, subsequent encounter

View all codes in the T18 family