ICD-10 Code C82.93 – Follicular lymphoma, unspecified, intra-abdominal lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.93 – Follicular lymphoma, unspecified, intra-abdominal lymph nodes
What it is
C82.93 identifies follicular lymphoma when the involved lymph nodes are intra-abdominal and the subtype is not further specified. Use this code for a documented follicular lymphoma diagnosis in abdominal nodal tissue.
Clinical signs
Clinical features vary; refer to documentation. Follicular lymphoma is often an indolent lymphoma with enlarged lymph nodes, and intra-abdominal involvement may be found on imaging or biopsy.
When to use this code
Use C82.93 when the record states follicular lymphoma and specifically names intra-abdominal lymph nodes, but does not identify a more specific site or subtype. It also fits when pathology or oncology notes confirm abdominal nodal disease without additional detail. Check documentation if the site is described only generally.
Do not use for
Do not use this code if the lymphoma site is outside the abdomen or if a different lymphoma type is documented. Do not assign it when the chart only says “lymphoma” without confirming follicular lymphoma.
Coding tip
Match the anatomic site exactly; if the note says mesenteric, retroperitoneal, or other intra-abdominal nodes, confirm whether C82.93 is supported.