2026 ICD-10-CM Diagnosis Code T15.01XAForeign body in cornea, right eye, initial encounter

ICD-10-CM Codes›S00–T88›T15-T19›T15

ICD-10-CM T15.01XA
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T15.01XA is a billable ICD-10-CM diagnosis code for foreign body in cornea, right eye, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 124 through 125. Coders also document this condition as corneal foreign body. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Effect of foreign body entering opening, initial encounter; External cause codes: intent of injury, accidental/unintentional; and External cause codes: other specified, classifiable and NEC; initial encounter.

Code Identity

ICD-10-CM Code
T15.01XA
Billable Status
Yes — Valid for Submission
Code Describes
Foreign body in cornea, right eye, initial encounter
Short Description
Foreign body in cornea, right eye, initial encounter
Same as the full description in the CMS dataset.
Parent Code
T15.01
Foreign body in cornea, right eye

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT15-T19Effects of foreign body entering through natural orifice
CategoryT15Foreign body on external eye
This CodeT15.01XAForeign body in cornea, right eye, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Corneal foreign body
  • Corneal rust ring
  • Foreign body in right cornea
  • Right corneal rust ring

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Foreign body on external eye (T15). 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 INJ020
Effect of foreign body entering opening, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR EXT020
External cause codes: intent of injury, accidental/unintentional
Default principal diagnosis: inpatient No · outpatient No
CCSR EXT018
External cause codes: other specified, classifiable and NEC; initial encounter
Default principal diagnosis: inpatient No · outpatient No

Clinical InformationClinical

  • Corneal Foreign Body

    external material in or on the cornea.

Patient EducationClinical

Corneal Disorders

Your cornea is the outermost layer of your eye. It is clear and shaped like a dome. The cornea helps to shield the rest of the eye from germs, dust, and other harmful matter. It also helps your eye to focus. If you wear contact lenses, they float on top of your corneas.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert T15.01XA to ICD-9-CMHistory

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

ICD-9-CM
930.0 Corneal foreign body
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
E914 FB entering eye
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

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 T15.01XAOverview

Is T15.01XA (Foreign body in cornea, right eye) a billable code?

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

What does the 7th character A in T15.01XA mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for foreign body in cornea, such as an emergency visit or first evaluation.

What MS-DRG does T15.01XA group to?

When foreign body in cornea, right eye, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 124, 125, with relative weights from 0.7678 to 1.3231 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of T15.01XA?

Under the General Equivalence Mappings, foreign body in cornea, right eye, initial encounter converts to ICD-9-CM 930.0 (corneal foreign body) and E914 (FB entering eye). 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.