2026 ICD-10-CM Diagnosis Code S05.51XAPenetrating wound with foreign body of right eyeball, initial encounter
S05.51XA is a billable ICD-10-CM diagnosis code for penetrating wound with foreign body of right eyeball, 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. Coders also document this condition as eyeball wound due to penetrating foreign body. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Open wounds of head and neck, initial encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Eyeball wound due to penetrating foreign body
- Penetrating wound of right eye proper
- Penetrating wound of right eye proper due to foreign body
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.
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.
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Convert S05.51XA to ICD-9-CMHistory
Code HistoryHistory
Questions About S05.51XAOverview
Is S05.51XA (Penetrating wound with foreign body of right eyeball) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report penetrating wound with foreign body of right eyeball, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in S05.51XA mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for penetrating wound with foreign body of right eyeball, such as an emergency visit or first evaluation.
What MS-DRG does S05.51XA group to?
When penetrating wound with foreign body of right eyeball, 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 S05.51XA?
Under the General Equivalence Mappings, penetrating wound with foreign body of right eyeball, initial encounter converts to ICD-9-CM 871.5 (penetrat magnet FB eye) and 871.6 (penetrat FB NEC 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.
