Benign neoplasm of lymph nodes

This code signifies the presence of a non-cancerous growth originating in the lymphatic system's nodes. These are typically slow-growing, localized masses that do not metastasize to other parts of the body. Histopathological examination confirms the benign nature of the lesion.

Assign this code when diagnostic imaging (e.g., ultrasound, CT scan) or biopsy results confirm a benign tumor within a lymph node. Documentation should clearly state "benign neoplasm of lymph node" or a similar definitive diagnosis after exclusion of malignancy.

• Ensure the pathology report explicitly states "benign" to differentiate from malignant lymphomas (C81-C86) or secondary malignancies.
• Do not confuse with lymphadenopathy (R59.-), which indicates enlarged lymph nodes without a definitive benign neoplastic diagnosis.
• Remember the Excludes1 note for lymphangioma (D18.1); these are distinct vascular malformations, not benign neoplasms of the lymph node tissue itself.