D55.0
Anemia due to glucose-6-phosphate dehydrogenase [G6PD] deficiency
Clinical Classification Guidelines
Inclusion Terms
- Favism
- G6PD deficiency anemia
Excludes Type 1
- glucose-6-phosphate dehydrogenase (G6PD) deficiency without anemia (D75.A)
Medical Intelligence & Overview
Anemia due to glucose-6-phosphate dehydrogenase (G6PD) deficiency, also known as favism, is a genetic condition that affects the red blood cells' ability to function properly. G6PD is an enzyme essential for protecting red blood cells from damage caused by oxidative stress. When a person with G6PD deficiency is exposed to certain triggers, their red blood cells can break down prematurely, leading to anemia. This form of anemia often manifests suddenly and can be temporary or long-term depending on exposure and management.
Causes & Symptoms
Clinical Causes: Genetic inheritance of G6PD deficiency, primarily passed down from a parent Exposure to certain medications, such as primaquine, sulfonamides, and some antibiotics Ingestion of certain foods, especially fava beans (favism) Infections that increase oxidative stress in the body Exposure to environmental toxins or chemicals
Key Symptoms: Sudden onset of fatigue and weakness Paleness of the skin Rapid heartbeat or shortness of breath Dark-colored urine due to hemoglobin breakdown jaundice (yellowing of the skin and eyes) Fever and abdominal pain in some cases Headaches and dizziness
Diagnostic & Treatment
Diagnosis Path: Diagnosis usually involves blood tests that measure G6PD enzyme activity, especially during a hemolytic episode. Doctors may also perform a complete blood count (CBC) to assess red blood cell levels, and observe the presence of hemolysis markers such as elevated bilirubin. A detailed medical history focusing on medication intake, dietary habits, and recent infections can assist in identifying triggers. In some cases, genetic testing is used to confirm G6PD deficiency.
Treatment Protocols: Management of G6PD deficiency-related anemia primarily focuses on avoiding known triggers. During episodes of hemolysis, supportive treatments such as blood transfusions may be necessary to restore red blood cells. Patients are advised to avoid medications known to trigger hemolysis, steer clear of fava beans, and maintain good infection control practices. In cases where severe anemia develops, hospitalization and close monitoring are essential. Educating patients about recognizing early symptoms and avoiding risk factors helps prevent future episodes.
Clinical Advice & FAQs
Billing Guidance
Is D55.0 a billable ICD-10 code?
Yes, D55.0 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report D55.0?
Clinical documentation must specify the nature of Anemia due to glucose-6-phosphate dehydrogenase [G6PD] deficiency and any associated comorbidities for accurate reporting.
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