Skip to main content

S35.99XD vs T18.2

S35.99XD (Other specified injury of unspecified blood vessel at abdomen, lower back and pelvis level, subsequent encounter) compared with T18.2 (Foreign body in stomach), from the official CMS tabular data.

Summary

These codes can be reported together when both conditions are documented, because S35.99XD lists T18.2 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named and billing status.S35.99XD is “Other specified injury of unspecified blood vessel at abdomen, lower back and pelvis level, subsequent encounter”; T18.2 is “Foreign body in stomach”. T18.2 is a non-billable header; S35.99XD is billable.

Registry fact

Can these codes be reported together?

Yes, when both are documented.S35.99XD lists T18.2 under Excludes2: “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code.

Official rule

Is there an Excludes2 relationship?

Yes.S35.99XD’s tabular entry: “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”. The note covers T18.2.

Official ruleGuide: Excludes1 vs Excludes2

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

One is a header.T18.2 is a non-billable header, but S35.99XD is not one of its subdivisions.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Informational

Excludes2 relationship

S35.99XD
Other specified injury of unspecified blood vessel at abdomen, lower back and pelvis level, subsequent encounter
↔
T18.2
Foreign body in stomach

What we found

Yes, when both are documented.S35.99XD carries an Excludes2 note covering T18.2: “effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

What to review

Report both only when the documentation supports both conditions; otherwise report the one documented.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source / rule

CMS ICD-10-CM tabular instructional notes

Official guidance behind these answers

  • Section I.A.12.b — Excludes2 · applies to: Excludes2

    A type 2 Excludes note represents “Not included here.” An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

    ICD-10-CM Official Guidelines FY2026

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

S35.99XDOther specified injury of unspecified blood vessel at abdomen, lower back and pelvis level, subsequent encounterT18.2Foreign body in stomach
Billing statusBillableNon-billable header

Report instead: T18.2XXA, T18.2XXD, T18.2XXS

ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionOther specified injury of unspecified blood vessel at abdomen, lower back and pelvis level, subsequent encounter is a billable ICD-10-CM diagnosis code (S35.99XD).Foreign body in stomach is a non-billable ICD-10-CM category code (T18.2).
7th characterThe appropriate 7th character is to be added to each code from category S35The appropriate 7th character is to be added to each code from category T18
Includes
injuries to the abdominal wall
injuries to the anus
injuries to the buttock
injuries to the external genitalia
—
Excludes2
burns and corrosions (T20-T32)
effects of foreign body in anus and rectum (T18.5)
effects of foreign body in genitourinary tract (T19.-)
effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)
foreign body in pharynx (T17.2-)
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
Use additional code—
code, if known, for foreign body entering into or through a natural orifice (W44.-)
Code also
any associated open wound (S31.-)
—

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on.

Edit this comparisonCheck a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources