ICD-10 Code C83.73 – Burkitt lymphoma, intra-abdominal lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C83.73 – Burkitt lymphoma, intra-abdominal lymph nodes
What it is
C83.73 identifies Burkitt lymphoma involving the intra-abdominal lymph nodes. Use this code when the record specifies this anatomic site and the diagnosis is Burkitt lymphoma.
Clinical signs
Clinical features vary; refer to documentation. Burkitt lymphoma is an aggressive non-Hodgkin lymphoma that may present with rapidly enlarging abdominal masses, pain, or bowel symptoms when intra-abdominal nodes are involved.
When to use this code
Use C83.73 when the provider documents Burkitt lymphoma in intra-abdominal lymph nodes, such as mesenteric, retroperitoneal, or other abdominal nodal disease. Code it from the confirmed diagnosis, not from suspected imaging findings alone. Check documentation if the site is described only broadly as abdominal or intra-abdominal.
Do not use for
Do not use this code for other non-Hodgkin lymphomas or for Burkitt lymphoma limited to a different nodal region. If the chart does not clearly identify intra-abdominal lymph node involvement, check documentation.
Coding tip
Confirm both the Burkitt lymphoma subtype and the documented nodal site before assigning C83.73.