C91.1
Chronic lymphocytic leukemia of B-cell type
Clinical Classification Guidelines
Inclusion Terms
- Lymphoplasmacytic leukemia
- Richter syndrome
Excludes Type 1
- lymphoplasmacytic lymphoma (C83.0-)
Medical Intelligence & Overview
Chronic lymphocytic leukemia (CLL) of B-cell type is a type of blood cancer that mainly affects adults. It involves the slow accumulation of abnormal B lymphocytes, a type of white blood cell vital for the immune response. Over time, these abnormal cells multiply and interfere with normal blood function. This condition is often detected during routine blood tests and can progress gradually, making early detection and management important. In some cases, CLL may evolve into more aggressive forms of blood cancer, such as Richter syndrome, which requires special attention.
Causes & Symptoms
Clinical Causes: Genetic mutations or changes in DNA within B lymphocytes Family history of blood cancers or other types of leukemia Exposure to certain environmental toxins, such as pesticides or chemicals Previous radiation therapy or chemotherapy treatments Age-related changes in immune system function Certain inherited genetic conditions
Key Symptoms: Swollen lymph nodes, especially in the neck, armpits, or groin Fatigue or persistent tiredness Unexplained fever or night sweats Unintentional weight loss Frequent infections due to weakened immunity Abdominal discomfort from enlarged spleen or lymph nodes Easy bruising or bleeding Shortness of breath in advanced stages
Diagnostic & Treatment
Diagnosis Path: Diagnosing chronic lymphocytic leukemia involves several steps. Blood tests, such as a complete blood count (CBC), may reveal an increased number of abnormal lymphocytes. Flow cytometry helps identify B-cell markers specific to CLL. Sometimes, a bone marrow biopsy is conducted to assess marrow infiltration. Imaging tests like ultrasound or CT scans may be utilized to evaluate enlarged lymph nodes or organs. Due to the potential for progression into conditions like Richter syndrome, healthcare providers may perform additional tests, including biopsies, to detect any transformation into more aggressive lymphoma.
Treatment Protocols: The management of chronic lymphocytic leukemia varies based on disease progression and symptoms. Treatment options include:
Clinical Advice & FAQs
Billing Guidance
Is C91.1 a billable ICD-10 code?
Yes, C91.1 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report C91.1?
Clinical documentation must specify the nature of Chronic lymphocytic leukemia of B-cell type and any associated comorbidities for accurate reporting.
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