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ICD-10/T18.5XXS

T18.5XXS ICD-10-CM Code: Foreign body in anus and rectum, sequela

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 913 — TRAUMATIC INJURY WITH MCC (MDC 21)
  • MS-DRG 914 — TRAUMATIC INJURY WITHOUT MCC (MDC 21)

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 anus and rectum, sequela is a billable ICD-10-CM diagnosis code (T18.5S).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T18.5XXS in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Foreign body in rectosigmoid (junction)

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 T18.5XXS 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

  • T18.5 — Foreign body in anus and rectum [Hierarchy]

Clinical classification (CCSR)

  • INJ073 — Injury, sequela [CCSR]

Potential MS-DRG

  • DRG 913 — TRAUMATIC INJURY WITH MCC [MS-DRG]: “TRAUMATIC INJURY WITH MCC (MDC 21)”
  • DRG 914 — TRAUMATIC INJURY WITHOUT MCC [MS-DRG]: “TRAUMATIC INJURY WITHOUT MCC (MDC 21)”

Nearest codes (40)

  • T18 — Foreign body in alimentary tract [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]
  • T18.128A — Food in esophagus causing other injury, initial encounter [Sibling]
  • T18.128D — Food in esophagus causing other injury, subsequent encounter [Sibling]
  • and 32 more

Relationships & Classification

Clinical classification (AHRQ CCSR):INJ073 — Injury, sequela (default).

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 2 MS-DRGs: DRG 913 (MDC 21), DRG 914 (MDC 21).

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

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T18.5XXS 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 T18.5XXS in its code family, with their registry titles.

  • T18.4XXD — Foreign body in colon, subsequent encounter
  • T18.4XXS — Foreign body in colon, sequela
  • T18.5 — Foreign body in anus and rectum
  • T18.5XXA — Foreign body in anus and rectum, initial encounter
  • T18.5XXD — Foreign body in anus and rectum, subsequent encounter
  • T18.8 — Foreign body in other parts of alimentary tract
  • T18.8XXA — Foreign body in other parts of alimentary tract, initial encounter
  • T18.8XXD — Foreign body in other parts of alimentary tract, subsequent encounter
  • T18.8XXS — Foreign body in other parts of alimentary tract, sequela
  • T18.9 — Foreign body of alimentary tract, part unspecified

View all codes in the T18 family