ICD-10-CM Billable Code

C82.99

Follicular lymphoma, unspecified, extranodal and solid organ sites

Clinical Classification Guidelines

Medical Intelligence & Overview

Follicular lymphoma is a type of non-Hodgkin lymphoma, a cancer that begins in the lymphatic system. It specifically affects a group of B lymphocytes called follicular cells, which are found in the lymph nodes and other lymphatic organs. When the cancer spreads beyond the lymph nodes into extranodal sites or solid organs, it is classified under the ICD-10 code C82.99, indicating an unspecified follicular lymphoma involving these areas. The disease often progresses slowly and can sometimes be managed effectively with medical care, but it requires careful diagnosis and ongoing monitoring.

Causes & Symptoms

Clinical Causes: Genetic mutations: Abnormal changes in the DNA of B cells can trigger uncontrolled growth. Age: It is more common in adults over 60 years old. Gender: Slightly more prevalent among males. Underlying immune system issues: Conditions that weaken the immune system may predispose individuals. Environmental exposures: Possible links to exposure to certain chemicals or toxins, though evidence is limited. Family history: A history of lymphoma or other lymphoid cancers in relatives may increase risk.

Key Symptoms: Painless swelling of lymph nodes, especially in the neck, armpits, or groin. Unexplained weight loss. Fever that persists without an infection. Night sweats and fatigue. Feeling of fullness in the abdomen, possibly due to enlarged lymph nodes or spleen. Weakness or general malaise. In some cases, symptoms may be absent until the disease progresses.

Diagnostic & Treatment

Diagnosis Path: Physical examination: Checking for swollen lymph nodes and other signs. Imaging tests: Such as CT scans, PET scans, or ultrasound to identify affected areas. Biopsy: Removal of a tissue sample from an enlarged lymph node or affected organ for microscopic examination. Laboratory tests: Blood tests to assess overall health and detect abnormal cells. Flow cytometry and molecular studies: Analyzing cell markers and genetic changes to confirm diagnosis.

Treatment Protocols: Watchful waiting: Monitoring the condition without immediate treatment for asymptomatic cases. Chemotherapy: Using drugs to kill cancer cells, often combined with immunotherapy. Immunotherapy: Medicines that help the immune system recognize and attack cancer cells. Targeted therapy: Drugs aimed at specific molecules involved in cancer growth. Radiation therapy: Applying high-energy rays to destroy cancerous tissue, typically for localized disease. Stem cell transplant: In some cases, high-dose chemotherapy followed by stem cell infusion may be considered.

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is C82.99 a billable ICD-10 code?
Yes, C82.99 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report C82.99?
Clinical documentation must specify the nature of Follicular lymphoma, unspecified, extranodal and solid organ sites and any associated comorbidities for accurate reporting.

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