2026 ICD-10-CM Diagnosis Code S05.90XAUnspecified injury of unspecified eye and orbit, initial encounter

ICD-10-CM Codes›S00–T88›S00-S09›S05

ICD-10-CM S05.90XA
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S05.90XA is a billable ICD-10-CM diagnosis code for unspecified injury of unspecified eye and orbit, 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, 963 through 965. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other unspecified injury.

Code Identity

ICD-10-CM Code
S05.90XA
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified injury of unspecified eye and orbit, initial encounter
Short Description
Unspecified injury of unspecified eye and orbit, init encntr
Parent Code
S05.90
Unspecified injury of unspecified eye and orbit

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS00-S09Injuries to the head
CategoryS05Injury of eye and orbit
This CodeS05.90XAUnspecified injury of unspecified eye and orbit, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Angle recession
  • Angle recession glaucoma
  • Blunt injury
  • Blunt injury of eye
  • Corneal endothelial wound
  • Discharge from wound of eye region
  • Effects of lightning
  • Eye injury from lightning
  • Glaucoma due to and following ocular trauma
  • Injury of ciliary ganglion
  • Injury of cornea
  • Injury of eye region
  • Injury of eye region caused by bungee cord
  • Injury of ganglion of nervous system
  • Injury of globe of eye
  • Injury of ocular adnexa
  • Injury of orbit
  • Injury of retina
  • Injury of vitreous body
  • Nonperforating wound of cornea
  • Open angle glaucoma due to and following ocular trauma
  • Parasympathetic nerve injury
  • Post-traumatic retinitis
  • Retinal damage
  • Secondary ocular hypertension due to ocular trauma
  • Superficial injury of cornea
  • Superficial injury of eye
  • Superficial injury of eye AND/OR adnexa
  • Superficial injury of left eye
  • Traumatic hematoma of orbit
  • Traumatic injury of globe of eye
  • Traumatic iris atrophy
  • Traumatic orbital hemorrhage
  • Wound of ocular adnexa

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Injury of eye and orbit (S05). 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 INJ027
Other unspecified injury
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Superficial Injury of Cornea

    trauma to the corneal epithelium.

Patient EducationClinical

Eye Injuries

The structure of your face helps protect your eyes from injury. Still, injuries can damage your eye, sometimes severely enough that you could lose your vision. Most eye injuries are preventable. If you play sports or work in certain jobs, you may need protection.

Read the full article at MedlinePlus

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

Convert S05.90XA to ICD-9-CMHistory

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

ICD-9-CM
871.9 Opn wound of eyeball NOS
Approximate The match is approximate rather than exact.
ICD-9-CM
918.9 Superficial inj eye NEC
Approximate The match is approximate rather than exact.
ICD-9-CM
921.9 Contusion of eye NOS
Approximate The match is approximate rather than exact.

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 S05.90XAOverview

Is S05.90XA (Unspecified injury of unspecified eye and orbit) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unspecified injury of unspecified eye and orbit, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character A in S05.90XA mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for unspecified injury of unspecified eye and orbit, such as an emergency visit or first evaluation.

What MS-DRG does S05.90XA group to?

When unspecified injury of unspecified eye and orbit, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 124, 125, 963, 964, 965, with relative weights from 0.7678 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of S05.90XA?

Under the General Equivalence Mappings, unspecified injury of unspecified eye and orbit, initial encounter converts to ICD-9-CM 871.9 (opn wound of eyeball NOS), 918.9 (superficial inj eye NEC), and 921.9 (contusion of eye NOS). 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.