289.83 Myelofibrosis
Myelofibrosis NOS
Secondary myelofibrosis
Code first the underlying disorder, such as:
malignant neoplasm of breast (174.0-174.9, 175.0-175.9)
Use additional code for associated therapy-related myelodysplastic syndrome, if applicable (238.72, 238.73)
Use additional external cause code if due to anti-neoplastic chemotherapy (E933.1)
Excludes:
idiopathic myelofibrosis (238.76)
leukoerythroblastic anemia (284.2)
myelofibrosis with myeloid metaplasia (238.76)
myelophthisic anemia (284.2)
myelophthisis (284.2)
primary myelofibrosis (238.76)