C83

C83 is a code in the ICD-10-CM system used to classify malignant neoplasms of lymph nodes. It is part of the neoplasms section and is used by healthcare providers, coders, researchers, and policymakers to document lymph node cancers in medical records, billing, and epidemiological data. The base code C83 covers malignant neoplasms of lymph nodes, excluding Hodgkin lymphoma, which is coded separately as C81.

ICD-10-CM codes in the C83 family are decimal codes (C83.x) that add specificity. Subcodes specify information such as the nodal region involved and histological type when available, with C83.0 through C83.9 representing different subcategories. In practice, clinicians assign C83 codes after pathology reports confirm a malignant neoplasm of lymph nodes.

This coding is used in many countries that adopt ICD-10-CM or its ICD-10-based variants; in the United States, ICD-10-CM is maintained by the National Center for Health Statistics and the Centers for Disease Control and Prevention in alignment with the WHO's ICD-10.

See also: Hodgkin lymphoma (C81) and other lymphoid neoplasm codes (e.g., C82-C85).