ICD-10 Code C82.53 – Diffuse follicle center lymphoma, intra-abdominal lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.53 – Diffuse follicle center lymphoma, intra-abdominal lymph nodes
What it is
C82.53 identifies diffuse follicle center lymphoma involving intra-abdominal lymph nodes. Use it when documentation specifies this follicular B-cell lymphoma subtype and the abdominal nodal site.
Clinical signs
Clinical features vary; refer to documentation. Typical records describe enlarged intra-abdominal lymph nodes, imaging findings, and pathology confirming diffuse follicle center lymphoma.
When to use this code
Use this code when the provider documents diffuse follicle center lymphoma and clearly states the primary nodal site is intra-abdominal. It also fits when pathology or oncology notes identify abdominal lymph node involvement without a more specific site. Check documentation if the site is unclear or if disease is described as generalized.
Do not use for
Do not use this code for follicular lymphoma at another nodal site, extranodal disease, or unspecified lymphoma. If the record only says “lymphoma” or gives a different anatomy, check documentation.
Coding tip
Match the histology and the exact lymph node location; both must be documented before assigning C82.53.