H21.331
Parasitic cyst of iris, ciliary body or anterior chamber, right eye
Clinical Classification Guidelines
Medical Intelligence & Overview
A parasitic cyst in the eye is a rare condition where a parasite forms a cystic structure within the parts of the eye such as the iris, ciliary body, or anterior chamber. This condition specifically affects the right eye and can lead to visual disturbances if left untreated. Recognizing the symptoms and understanding the causes can help in prompt diagnosis and management.
Causes & Symptoms
Clinical Causes: Infection by parasitic organisms such as trematodes or cestodes that invade the eye tissue Contamination through ingestion or contact with contaminated water or food harboring parasitic larvae Transmission via insect bites that carry infectious parasites to the eye area Traveling to or residing in regions where parasitic eye infections are endemic Poor hygiene practices that increase risk of parasitic infections
Key Symptoms: Visible cystic lesion in or around the iris or anterior chamber Blurred or decreased vision in the affected eye Eye redness and swelling Sensation of a foreign body or discomfort in the eye Light sensitivity (photophobia) Increased tearing or discharge Occasional eye pain or aching sensation
Diagnostic & Treatment
Diagnosis Path: Diagnosis often involves a detailed eye examination using slit-lamp microscopy to visualize the cyst. Additional diagnostic tools include ocular ultrasound imaging to assess the cyst's size, location, and structural characteristics. Sometimes, laboratory analysis of ocular fluids or tissues may be necessary to identify parasitic species. History taking about travel, exposure risks, and symptom duration is also important. In some cases, imaging techniques like MRI or CT scans are used to rule out other ocular abnormalities.
Treatment Protocols: Treatment strategies depend on the size, location, and type of parasite involved. Common approaches include:
Clinical Advice & FAQs
Billing Guidance
Is H21.331 a billable ICD-10 code?
Yes, H21.331 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report H21.331?
Clinical documentation must specify the nature of Parasitic cyst of iris, ciliary body or anterior chamber, right eye and any associated comorbidities for accurate reporting.
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