Other leukemias of specified cell type (C94) ICD-10-CM
The C94 code range covers other leukemias of specified cell type with 22 ICD-10-CM diagnosis codes. 16 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the C94 Range 22 codes · 16 billable
- C94 Other leukemias of specified cell typeNon-billable
- C94.0 Acute erythroid leukemiaNon-billable
- C94.00 Acute erythroid leukemia, not having achieved remission
- C94.01 Acute erythroid leukemia, in remission
- C94.02 Acute erythroid leukemia, in relapse
- C94.2 Acute megakaryoblastic leukemiaNon-billable
- C94.20 Acute megakaryoblastic leukemia not having achieved remission
- C94.21 Acute megakaryoblastic leukemia, in remission
- C94.22 Acute megakaryoblastic leukemia, in relapse
- C94.3 Mast cell leukemiaNon-billable
- C94.30 Mast cell leukemia not having achieved remission
- C94.31 Mast cell leukemia, in remission
- C94.32 Mast cell leukemia, in relapse
- C94.4 Acute panmyelosis with myelofibrosisNon-billable
- C94.40 Acute panmyelosis with myelofibrosis not having achieved remission
- C94.41 Acute panmyelosis with myelofibrosis, in remission
- C94.42 Acute panmyelosis with myelofibrosis, in relapse
- C94.6 Myelodysplastic disease, not elsewhere classified
- C94.8 Other specified leukemiasNon-billable
- C94.80 Other specified leukemias not having achieved remission
- C94.81 Other specified leukemias, in remission
- C94.82 Other specified leukemias, in relapse
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C94 range.
Acute Erythroid Leukemia in Remission
A finding of acute erythroid leukemia that is not growing and responds to treatment.
Acute Panmyelosis with Myelofibrosis
An acute myeloid leukemia characterized by bone marrow fibrosis without preexisting primary myelofibrosis.
Acute Panmyelosis with Myelofibrosis in Remission
A finding of acute panmyelosis with myelofibrosis that is not growing and responds to treatment.
Leukemia, Erythroblastic, Acute
A myeloproliferative disorder characterized by neoplastic proliferation of erythroblastic and myeloblastic elements with atypical erythroblasts and myeloblasts in the peripheral blood.
Leukemia, Mast-Cell
A form of systemic mastocytosis (MASTOCYTOSIS, SYSTEMIC) characterized by the presence of large numbers of tissue MAST CELLS in the peripheral blood without skin lesions. It is a high-grade LEUKEMIA disease with bone marrow smear of >20% MAST CELLS, multi-organ failure and a short survival.
Leukemia, Megakaryoblastic, Acute
An acute myeloid leukemia in which 20-30% of the bone marrow or peripheral blood cells are of megakaryocyte lineage. MYELOFIBROSIS or increased bone marrow RETICULIN is common.
Polycythemia Vera
A myeloproliferative disorder of unknown etiology, characterized by abnormal proliferation of all hematopoietic bone marrow elements and an absolute increase in red cell mass and total blood volume, associated frequently with splenomegaly, leukocytosis, and thrombocythemia. Hematopoiesis is also reactive in extramedullary sites (liver and spleen). In time myelofibrosis occurs.
Recurrent Acute Erythroid Leukemia
The reemergence of acute erythroid leukemia after a period of remission.
Recurrent Acute Panmyelosis with Myelofibrosis
The reemergence of acute panmyelosis with myelofibrosis after a period of remission.
About the C94 Code Range
These conditions include specified leukemias and myelodysplastic disease within a group of cancers of lymphoid, blood-forming and related tissue.
The subdivisions distinguish acute erythroid leukemia (C94.0), acute megakaryoblastic leukemia (C94.2), and mast cell leukemia (C94.3). They also identify acute panmyelosis with myelofibrosis (C94.4) and other specified leukemias (C94.8). Each of these splits into disease not yet in remission, in remission, or in relapse. C94.6 identifies myelodysplastic disease without those status subdivisions.
Questions About This Page
How many billable codes are in the C94 range?
Of the 22 codes in this range, 16 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the C94 range classify?
The range classifies other leukemias of specified cell type. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
