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S05.4 vs T15.11XA

S05.4 (Penetrating wound of orbit with or without foreign body) compared with T15.11XA (Foreign body in conjunctival sac, right eye, initial encounter), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

These codes can be reported together when both conditions are documented, because S05.4 lists T15.11XA under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named and billing status.S05.4 is “Penetrating wound of orbit with or without foreign body”; T15.11XA is “Foreign body in conjunctival sac, right eye, initial encounter”. S05.4 is a non-billable header; T15.11XA is billable.

Registry fact

Can these codes be reported together?

Yes, when both are documented.S05.4 lists T15.11XA under Excludes2: “effects of foreign body on external eye (T15.-)”. 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.S05.4’s tabular entry: “effects of foreign body on external eye (T15.-)”. The note covers T15.11XA.

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.S05.4 is a non-billable header, but T15.11XA 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

S05.4
Penetrating wound of orbit with or without foreign body
↔
T15.11XA
Foreign body in conjunctival sac, right eye, initial encounter

What we found

Yes, when both are documented.S05.4 carries an Excludes2 note covering T15.11XA: “effects of foreign body on external eye (T15.-)”

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 FY2027

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

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

Official descriptionDiffers
S05.4

Penetrating wound of orbit with or without foreign body

T15.11XA

Foreign body in conjunctival sac, right eye, initial encounter

StatusDiffers
S05.4
Non-billable header

A header is not reported on a claim; a code beneath it is.

Report instead: S05.40XA, S05.40XD, S05.40XS, S05.41XA, S05.41XD

T15.11XA
Billable
Excludes2Differs
S05.4
  • retained (old) foreign body following penetrating wound in orbit (H05.5-)
  • 2nd cranial [optic] nerve injury (S04.0-)
  • 3rd cranial [oculomotor] nerve injury (S04.1-)
  • open wound of eyelid and periocular area (S01.1-)
  • orbital bone fracture (S02.1-, S02.3-, S02.8-)
  • superficial injury of eyelid (S00.1-S00.2)
  • burns and corrosions (T20-T32)
  • effects of foreign body in ear (T16)
  • effects of foreign body in larynx (T17.3)
  • effects of foreign body in mouth NOS (T18.0)
  • effects of foreign body in nose (T17.0-T17.1)
  • effects of foreign body in pharynx (T17.2)
  • effects of foreign body on external eye (T15.-)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
T15.11XA
  • foreign body in penetrating wound of orbit and eye ball (S05.4-, S05.5-)
  • open wound of eyelid and periocular area (S01.1-)
  • retained foreign body in eyelid (H02.8-)
  • retained (old) foreign body in penetrating wound of orbit and eye ball (H05.5-, H44.6-, H44.7-)
  • superficial foreign body of eyelid and periocular area (S00.25-)
  • 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 codeDiffers
S05.4

None at this code

T15.11XA
  • code, if known, for foreign body entering into or through a natural orifice (W44.-)
Code alsoDiffers
S05.4
  • for any associated infection
T15.11XA

None at this code

CategoryDiffers
S05.4

S05 Injury of eye and orbit

T15.11XA

T15 Foreign body on external eye

ChapterSame for both

S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)

IncludesDiffers
S05.4
  • open wound of eye and orbit
  • injuries of ear
  • injuries of eye
  • injuries of face [any part]
T15.11XA

None at this code

7th characterDiffers
S05.4
  • The appropriate 7th character is to be added to each code from category S05
T15.11XA
  • The appropriate 7th character is to be added to each code from category T15

No Excludes1 and Code first note at either code.

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. In a row that differs, notes every code shares are dimmed.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources