C95.1

Clinical Information

• A slowly progressing cancer that starts in blood-forming tissues such as the bone marrow, and causes large numbers of white blood cells to be produced and enter the blood stream.

• A slowly progressing leukemia characterized by a clonal malignant) proliferation of maturing and mature myeloid cells or mature lymphocytes. When the clonal cellular population is composed of myeloid cells, the process is called chronic myelogenous leukemia. When the clonal cellular population is composed of lymphocytes, it is classified as chronic lymphocytic leukemia, hairy cell leukemia, or t-cell large granular lymphocyte leukemia.

• Leukemia in which the involved cell is well differentiated, usually b-lymphocytes, but immunologically incompetent; types distinguished include chronic granulocytic, chronic lymphocytic, chronic myelomonocytic, eosinophilic and hairy cell leukemia.

Details

• C95.1 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.

• The 2023 edition of ICD-10-CM C95.1 became effective on October 1, 2022.

• This is the American ICD-10-CM version of C95.1 – other international versions of ICD-10 C95.1 may differ.