H33.123 Parasitic cyst of retina, bilateral

ICD10CM code

#### Name of the Condition
- Parasitic cyst of retina, bilateral
- Technical term: Bilateral retinal parasitic cyst

#### Summary
Parasitic cysts of the retina are rare eye conditions caused by parasites that form cysts on the retina, affecting vision. When bilateral, both eyes are involved, which can significantly impact eyesight.

#### Causes
- The condition usually results from parasitic infections, such as those caused by Toxoplasma gondii or cysticercosis, which can lead to cyst formation on the retina.

#### Risk Factors
- Exposure to regions where parasitic infections are common
- Consuming undercooked meat or contaminated food and water
- Poor sanitation and hygiene practices
- Compromised immune systems, which are more susceptible to infections

#### Symptoms
- Blurred or distorted vision
- Floaters or dark spots in the vision
- Visual field loss
- In severe cases, complete loss of vision

#### Diagnosis
- Comprehensive eye examination
- Imaging tests such as optical coherence tomography (OCT) and fundus photography
- Blood tests to identify specific parasites

#### Treatment Options
- Anti-parasitic medications tailored to eliminate the specific parasite responsible
- Corticosteroids to reduce inflammation
- In severe cases, surgery may be necessary to remove the cysts and repair retinal damage

#### Prognosis and Follow-Up
- The prognosis depends on the extent of retinal damage and the timeliness of treatment.
- Regular eye examinations are crucial to monitor the condition and prevent further complications.

#### Complications
- Permanent vision loss if not treated promptly
- Retinal detachment
- Secondary infections or inflammatory responses

#### Lifestyle & Prevention
- Proper cooking of food and maintaining good food hygiene
- Avoiding areas with known parasitic risks, if possible
- Maintaining a strong immune system through a healthy lifestyle

#### When to Seek Professional Help
- Sudden changes in vision or significant visual disturbances
- Persistent eye pain or inflammation
- If diagnosed with a systemic parasitic infection

#### Additional Resources
- American Academy of Ophthalmology: [https://www.aao.org](https://www.aao.org)
- Centers for Disease Control and Prevention (CDC): [https://www.cdc.gov](https://www.cdc.gov)

#### Tips for Medical Coders
- Ensure that both retinal involvement (bilateral) is properly documented and coded.
- Verify that the parasitic cause is clearly indicated in the medical records to avoid coding errors.

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