D69.42
Congenital and hereditary thrombocytopenia purpura
Clinical Classification Guidelines
Inclusion Terms
- Congenital thrombocytopenia
- Hereditary thrombocytopenia
Code First
- congential or hereditary disorder, such as:
- thrombocytopenia with absent radius (TAR syndrome) (Q87.2)
Medical Intelligence & Overview
Congenital and hereditary thrombocytopenia purpura refers to a group of rare inherited disorders characterized by a low platelet count, which can lead to easy bruising and bleeding. This condition is present from birth and results from genetic factors affecting platelet production or function. Patients with this condition often have a lifelong history of bleeding tendencies, varying from mild to severe. These disorders are classified under ICD-10 code D69.42 and are important for healthcare professionals to recognize for appropriate diagnosis, management, and genetic counseling. Understanding the causes, symptoms, and available treatments can help patients and caregivers manage the condition more effectively.
Causes & Symptoms
Clinical Causes: Genetic mutations affecting platelet formation and function Inheritance patterns, including autosomal dominant or autosomal recessive transmission Specific gene defects involved in megakaryocyte development or platelet release Variations in genes responsible for immune system regulation affecting platelet survival
Key Symptoms: Frequent easy bruising Prolonged bleeding from cuts or injuries Frequent nosebleeds or bleeding gums Heavy menstrual bleeding in females Petechiae — small red or purple spots on the skin Potential for internal bleeding in severe cases Signs of anemia due to ongoing blood loss
Diagnostic & Treatment
Diagnosis Path: Diagnosing congenital and hereditary thrombocytopenia purpura involves a combination of medical history, physical examination, and laboratory tests. Key diagnostic steps include: - Complete blood count (CBC) to measure platelet levels - Peripheral blood smear examination to assess platelet morphology - Bone marrow biopsy to evaluate platelet production - Genetic testing to identify specific gene mutations - Family history assessment to understand inheritance patterns Additional tests might be employed to rule out other causes of low platelet count, such as acquired thrombocytopenia or autoimmune conditions.
Treatment Protocols: Management of congenital and hereditary thrombocytopenia purpura depends on the severity of symptoms and the specific subtype. Common approaches include: - Observation for mild cases with minimal bleeding risk - Platelet transfusions during significant bleeding episodes or before surgical procedures - Medications such as corticosteroids or immunoglobulins in cases involving immune-mediated destruction - Use of medications like thrombopoietin receptor agonists to stimulate platelet production - Bone marrow transplantation in severe, refractory cases - Regular monitoring and patient education about bleeding precautions Since the condition is inherited, genetic counseling may also be recommended for affected families to understand inheritance risks and family planning options.
Clinical Advice & FAQs
Billing Guidance
Is D69.42 a billable ICD-10 code?
Yes, D69.42 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report D69.42?
Clinical documentation must specify the nature of Congenital and hereditary thrombocytopenia purpura and any associated comorbidities for accurate reporting.
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