Yes, CML (Chronic Myelogenous Leukemia) is classified as an MPN (Myeloproliferative Neoplasm).
According to the 2008 revision of the World Health Organization (WHO) classification of myeloid neoplasms, MPNs include CML along with other conditions such as polycythemia vera (PV), essential thrombocythemia (ET), and primary myelofibrosis (PMF).