ICD-10-CM Billable Code

H33.122

Parasitic cyst of retina, left eye

Clinical Classification Guidelines

Medical Intelligence & Overview

A parasitic cyst of the retina is a rare condition where a cyst forms in the retina, the light-sensitive tissue at the back of the eye, due to a parasitic infection. When this occurs in the left eye, it can affect vision and eye health. This condition is classified under ICD-10 code H33.122. Understanding the causes, symptoms, diagnosis, and potential treatments can help in managing this condition effectively.

Causes & Symptoms

Clinical Causes: Infection by parasites such as *Toxocara*, *Echinococcus*, or *Cysticercus* species. Exposure to contaminated soil, water, or food that harbors parasitic larvae. Contact with infected animals or their feces, especially dogs and cats. Poor hygiene practices that facilitate parasite transmission. Immune system responses that enable parasites to invade ocular tissues.

Key Symptoms: Blurred or decreased vision in the affected eye. Seeing floaters or small moving spots within the visual field. Eye redness, swelling, or discomfort. Photophobia, or sensitivity to light. Possible eye pain or a sensation of pressure. In some cases, visible cyst or lesion may be observed during an eye examination.

Diagnostic & Treatment

Diagnosis Path: Diagnosing a parasitic cyst of the retina involves several steps:

Treatment Protocols: The treatment approach depends on the size, location, and impact of the cyst, as well as the underlying parasitic infection:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is H33.122 a billable ICD-10 code?
Yes, H33.122 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report H33.122?
Clinical documentation must specify the nature of Parasitic cyst of retina, left eye and any associated comorbidities for accurate reporting.

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