Mixed cellularity Hodgkin lymphoma, intrapelvic lymph nodes

This code signifies a specific subtype of Hodgkin lymphoma, mixed cellularity, affecting the lymph nodes located within the pelvic region. Mixed cellularity Hodgkin lymphoma is characterized by a heterogeneous cellular infiltrate, including Reed-Sternberg cells, lymphocytes, eosinophils, and plasma cells.

This code is appropriate for patients diagnosed with mixed cellularity Hodgkin lymphoma where imaging or biopsy confirms involvement of intrapelvic lymph nodes. Documentation should clearly specify the histological subtype as mixed cellularity and the anatomical location of the affected lymph nodes as intrapelvic.

• Ensure the pathology report explicitly states "mixed cellularity" as the subtype of Hodgkin lymphoma.
• Verify that imaging or surgical reports confirm involvement of lymph nodes specifically within the pelvic cavity.
• Do not use for other subtypes of Hodgkin lymphoma or for lymph node involvement in other anatomical sites.