B02.33
Zoster keratitis
Clinical Classification Guidelines
Inclusion Terms
- Herpes zoster keratoconjunctivitis
Medical Intelligence & Overview
Zoster keratitis, also known as herpes zoster keratoconjunctivitis, is a painful eye condition caused by the reactivation of the varicella-zoster virus. This condition involves inflammation of the cornea (keratitis) and the conjunctiva of the eye, leading to discomfort, visual disturbances, and potential complications if left untreated. Typically affecting individuals with a history of shingles, zoster keratitis requires prompt medical attention to prevent long-term damage to vision.
Causes & Symptoms
Clinical Causes: Reactivation of the varicella-zoster virus that originally caused chickenpox Weakened immune system due to aging, illness, or immunosuppressive therapies Stress or trauma to the nerves supplying the eye Inadequate vaccine coverage or prior vaccination failure
Key Symptoms: Eye pain or discomfort Redness of the eye Photophobia (sensitivity to light) Blurred or decreased vision Tearing or discharge from the eye Sensitivity to touch around the eye Lacy or dendritic lesions on the cornea observed under examination Swelling of eyelids or conjunctiva
Diagnostic & Treatment
Diagnosis Path: Diagnosis is primarily based on clinical examination by an ophthalmologist or healthcare provider, who looks for characteristic corneal lesions and signs of conjunctivitis. Additional assessments may include slit-lamp examination to identify dendritic or geographic ulcerations on the cornea. In some cases, laboratory tests like PCR (polymerase chain reaction) or viral culture may be used to detect herpes zoster virus DNA for confirmation, especially in atypical cases.
Treatment Protocols: Treatment typically involves antiviral medications to inhibit viral replication, which can help reduce symptoms and prevent complications. These include:
Clinical Advice & FAQs
Billing Guidance
Is B02.33 a billable ICD-10 code?
Yes, B02.33 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report B02.33?
Clinical documentation must specify the nature of Zoster keratitis and any associated comorbidities for accurate reporting.
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