D55.2
Anemia due to disorders of glycolytic enzymes
Clinical Classification Guidelines
Excludes Type 1
- disorders of glycolysis not associated with anemia (E74.81-)
Medical Intelligence & Overview
Anemia due to disorders of glycolytic enzymes is a rare type of blood condition caused by issues with specific enzymes that help red blood cells produce energy. When these enzymes don't work properly, it leads to a shortened lifespan of red blood cells, resulting in anemia—a deficiency of healthy red blood cells. This condition is classified under ICD-10 code D55.2 and primarily involves inherited enzyme deficiencies that affect the metabolism within red blood cells.
Causes & Symptoms
Clinical Causes: Inherited genetic mutations affecting glycolytic enzymes, such as pyruvate kinase deficiency. Autosomal recessive inheritance pattern, meaning a child must inherit affected genes from both parents to develop the condition. Rare cases of acquired enzyme deficiencies due to acquired factors like folate deficiency or medicines, though these are less common.
Key Symptoms: Fatigue and weakness due to reduced oxygen delivery to tissues. Pale skin (pallor) resulting from low red blood cell count. Shortness of breath, especially during exertion. Dizziness or light-headedness. Rapid heart rate (tachycardia) as the body tries to compensate. Jaundice or yellowing of the skin and eyes, caused by increased breakdown of red blood cells. Splenomegaly, or an enlarged spleen, in some cases. Hemolytic crises, which may cause sudden worsening of symptoms.
Diagnostic & Treatment
Diagnosis Path: Diagnosing anemia due to glycolytic enzyme disorders involves a combination of blood tests and family history assessment. Key elements include: - Blood glucose-6-phosphate dehydrogenase (G6PD) testing to rule out other hemolytic anemias. - Enzyme activity assays to measure the activity levels of specific glycolytic enzymes in red blood cells. - Complete blood count (CBC) to evaluate hemoglobin levels, hematocrit, and red blood cell indices. - Peripheral blood smear microscopy to observe red blood cell morphology. - Genetic testing to identify mutations in genes responsible for glycolytic enzymes. These diagnostic tools help confirm the specific enzyme deficiency leading to hemolytic anemia.
Treatment Protocols: Treatment strategies focus on managing symptoms and preventing hemolytic episodes. Since the root cause is genetic enzyme deficiency, therapies include: - Avoidance of triggers that may cause red blood cell destruction, such as certain drugs or infections. - Supportive care like blood transfusions during severe hemolytic crises. - Folic acid supplementation to support red blood cell production. - Splenectomy (surgical removal of the spleen) in severe or recurrent cases to reduce red blood cell destruction. - In some cases, enzyme replacement therapy may be explored, although current options are limited. - Regular monitoring of blood counts and overall health. Researchers continue to study targeted therapies for enzyme deficiencies, but current management emphasizes supportive care and preventing complications.
Clinical Advice & FAQs
Billing Guidance
Is D55.2 a billable ICD-10 code?
Yes, D55.2 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report D55.2?
Clinical documentation must specify the nature of Anemia due to disorders of glycolytic enzymes and any associated comorbidities for accurate reporting.
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