C81-C96: Malignant neoplasms, stated or presumed to be primary, of lymphoid, haematopoietic and related tissue

C96: Other and unspecified malignant neoplasms of lymphoid, haematopoietic and related tissue

The categorized group of conditions under the title "Other and Unspecified Malignant Neoplasms of Lymphoid, Haematopoietic, and Related Tissue" broadly refer to forms of cancer that primarily impact the body's lymphatic and blood-forming tissues. These conditions arise when there's an abnormal growth and division of cells in these tissues, leading to the formation of malignant tumors. Factors causing these conditions could range from inherited genetic disorders to exposure to certain infections or environmental factors. Typically, these conditions could present with various symptoms including unexplained weight loss, fever, excessive sweating, fatigue, or recurring infections. Progression of the disease could result in more severe health issues affecting various body systems, such as the immune system. As with any group of conditions, manifestations and progression may vary from case to case.