ICD-10-CM > C00-D49 > C81-C96 > C94 > C94.4 C94.4 Acute panmyelosis with myelofibrosis Non-Billable/Non-Specific Applicable To Acute myelofibrosis Type 1 Excludes myelofibrosis NOS (D75.81)secondary myelofibrosis NOS (D75.81) Codes C94.40Acute panmyelosis with myelofibrosis not having achieved remissionC94.41Acute panmyelosis with myelofibrosis, in remissionC94.42Acute panmyelosis with myelofibrosis, in relapse