H44.0 Purulent endophthalmitis

Name of the Condition

• Purulent Endophthalmitis

Summary

Purulent endophthalmitis is a severe intraocular infection characterized by the presence of pus within the eye, typically affecting the vitreous or aqueous humor. It is a sight-threatening condition that requires prompt medical intervention to prevent permanent vision loss.

Causes

The condition is most commonly caused by bacterial or fungal infections, which may enter the eye through trauma, surgery, or systemic spread. Postoperative infections, particularly after cataract or retinal surgery, are a frequent cause. Less commonly, it may result from endogenous sources, such as septicemia.

Risk Factors

• Recent eye surgery (e.g., cataract, glaucoma, or retinal procedures).
• Penetrating eye trauma.
• Immunocompromised states (e.g., diabetes, HIV, or immunosuppressive therapy).
• Pre-existing ocular infections or inflammation.
• Use of intraocular devices or implants.

Symptoms

• Sudden, severe eye pain.
• Marked decrease in vision or vision loss.
• Redness and swelling of the eye.
• Sensitivity to light (photophobia).
• Discharge or pus visible in the eye.
• Floaters or a "cobweb" sensation in the visual field.

Diagnosis

Diagnosis is based on clinical evaluation, including a detailed eye examination and history of recent procedures or trauma. Slit-lamp examination may reveal anterior chamber inflammation, hypopyon (pus in the anterior chamber), or vitreous haze. Ultrasound or optical coherence tomography (OCT) may be used to assess intraocular structures. Aqueous or vitreous samples may be obtained for culture and sensitivity testing to identify the causative organism.

Treatment Options

• Antimicrobial therapy: Intravitreal injections of antibiotics or antifungals, often guided by culture results. Systemic antibiotics may be added for severe cases.
• Surgical intervention: Vitrectomy (removal of vitreous) to clear infection and deliver medications directly to the eye.
• Supportive care: Topical steroids to reduce inflammation, once infection is controlled.
• Monitoring: Close follow-up to assess response to treatment and adjust therapy as needed.

Prognosis and Follow-Up

Prognosis depends on the timeliness of treatment, the causative organism, and the extent of ocular damage. Early intervention improves outcomes, but vision loss may still occur. Follow-up includes regular eye examinations to monitor for complications like retinal detachment, macular edema, or chronic inflammation. Long-term vision may range from partial recovery to permanent blindness.

Complications

• Permanent vision loss or blindness.
• Retinal detachment.
• Cataract formation.
• Chronic uveitis or glaucoma.
• Phthisis bulbi (shrinkage of the eye).

Lifestyle & Prevention

• Adhere to sterile techniques during eye surgery to minimize infection risk.
• Promptly treat any eye injuries or infections.
• Maintain good glycemic control if diabetic.
• Avoid touching or rubbing the eye, especially after surgery.
• Follow postoperative care instructions carefully.

When to Seek Professional Help

Seek immediate medical attention if you experience sudden severe eye pain, vision loss, or redness after surgery or trauma. Do not delay care, as early treatment is critical to preserving vision.

Tips for Medical Coders

• Code H44.0 is specific to purulent endophthalmitis and should be used when documentation confirms the presence of pus within the eye.
• Ensure the diagnosis is supported by clinical findings (e.g., hypopyon, vitreous haze) and, if available, laboratory confirmation of infection.
• Differentiate from non-purulent endophthalmitis (e.g., aseptic inflammation) or other intraocular infections, as coding depends on the presence of purulence.
• Document the underlying cause (e.g., postoperative, traumatic) if known, as this may impact additional coding or billing considerations.