E70.321 Tyrosinase positive oculocutaneous albinism

Name of the Condition

• Tyrosinase positive oculocutaneous albinism (ICD-10-CM Code: E70.321)

Summary

Tyrosinase positive oculocutaneous albinism is a genetic condition characterized by reduced melanin pigment in the skin, hair, and eyes. This affects pigmentation and often leads to vision problems due to abnormal development of the optic nerves and retinas.

Causes

Tyrosinase positive oculocutaneous albinism results from mutations in genes responsible for melanin synthesis or transport. These genetic changes disrupt the production of melanin, a pigment critical for normal pigmentation and eye development.

Risk Factors

• Genetic inheritance; typically autosomal recessive, requiring mutations in both copies of a gene.
• Family history of albinism.
• Certain ethnic groups may have higher carrier rates for specific genetic variants.

Symptoms

• Pale skin, light hair, and light-colored eyes.
• Vision issues, including nystagmus (involuntary eye movement), strabismus (crossed eyes), photophobia (sensitivity to light), and reduced visual acuity.
• Increased susceptibility to sunburn and skin damage due to lack of melanin.

Diagnosis

Diagnosis involves a physical exam to assess pigmentation, ocular evaluations by an ophthalmologist, and genetic testing to identify specific mutations. Clinical evaluation is often necessary, as newborn screening may not detect all forms.

Treatment Options

Management focuses on addressing symptoms and preventing complications. This may include corrective lenses for vision problems, sunglasses or tinted contact lenses for photophobia, and regular skin checks to monitor for signs of skin damage or cancer.

Prognosis and Follow-Up

Individuals with tyrosinase positive oculocutaneous albinism typically lead healthy lives with appropriate management. Regular follow-up with ophthalmologists and dermatologists is recommended to monitor vision and skin health.

Complications

• Increased risk of skin cancer due to reduced melanin protection.
• Persistent vision problems that may impact daily activities.
• Social or psychological challenges related to appearance or visual impairment.

Lifestyle & Prevention

• Use broad-spectrum sunscreen and protective clothing to reduce sunburn risk.
• Wear UV-protective eyewear to manage photophobia.
• Regular skin examinations to detect early signs of skin damage or cancer.

When to Seek Professional Help

Seek medical attention if you experience worsening vision, severe sunburn, new skin lesions, or unexplained eye pain or irritation.

Tips for Medical Coders

Document the specific type of oculocutaneous albinism (tyrosinase positive) and any associated complications or management strategies. Ensure clinical documentation supports the diagnosis and any related services, such as ophthalmologic or dermatologic evaluations.