Other leukemias of specified cell type (C94)
The ICD-10 code section C94 categorizes "Other leukemias of specified cell type," used for coding various rare and specific leukemias that may not fit common classifications. This section includes conditions such as acute erythroid leukemia, acute megakaryoblastic leukemia, mast cell leukemia, acute panmyelosis with myelofibrosis, and other specified leukemias.
These codes are essential when documenting types of leukemia with unique cellular origins and behaviors. For example, C94.00 and related codes refer to acute erythroid leukemia, also known as erythroleukemia or "FAB M6," with distinctions for remission and relapse status. Similarly, C94.20 covers acute megakaryoblastic leukemia, sometimes called megakaryocytic leukemia, with specific subcodes indicating treatment response phases. C94.30 addresses mast cell leukemia, recognized by synonyms like malignant mastocytosis and systemic mast cell disease. The section also includes codes for acute panmyelosis with myelofibrosis and myelodysplastic diseases not elsewhere classified, which are linked to various hematological disorders. Additionally, C94.80 through C94.82 cover other specified leukemias, including mixed phenotype leukemias and aggressive NK-cell leukemias, with attention to remission and relapse.
Neoplasms (C00–D49)
Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)
C94 Other leukemias of specified cell type
C94.0 Acute erythroid leukemia
- 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 leukemia
- 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 leukemia
- 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 myelofibrosis
- 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 leukemias
- C94.80 Other specified leukemias not having achieved remission
- C94.81 Other specified leukemias, in remission
- C94.82 Other specified leukemias, in relapse
Other leukemias of specified cell type (C94)
Instructional Notations
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.
