C81.9Hodgkin lymphoma, unspecified

C81.9 is the ICD-10-CM diagnosis code for Hodgkin lymphoma, unspecified. It belongs to category C81 (Hodgkin lymphoma), block C81-C96 (malignant neoplasms of lymphoid, hematopoietic and related tissue) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 11 subcodes must be used instead.

Within C81, choose C81.9 (unspecified) only when documentation doesn't support a more specific option: nodular lymphocyte predominant Hodgkin lymphoma (C81.0), nodular sclerosis Hodgkin lymphoma (C81.1), mixed cellularity Hodgkin lymphoma (C81.2), lymphocyte depleted Hodgkin lymphoma (C81.3), Lymphocyte-rich Hodgkin lymphoma (C81.4) and other Hodgkin lymphoma (C81.7).

To report this condition, pick the subcode that matches the documentation: C81.90 (unspecified site), C81.91 (lymph nodes of head, face, and neck), C81.92 (intrathoracic lymph nodes), C81.93 (intra-abdominal lymph nodes), C81.94 (lymph nodes of axilla and upper limb), C81.95 (lymph nodes of inguinal region and lower limb), C81.96 (intrapelvic lymph nodes), C81.97 (spleen) and 3 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.