Monocytic leukemia (C93) ICD-10-CM
The C93 code range covers monocytic leukemia with 21 ICD-10-CM diagnosis codes. 15 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- monocytoid leukemia
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.
- personal history of leukemia Z85.6
Codes in the C93 Range 21 codes · 15 billable
- C93 Monocytic leukemiaNon-billable
- C93.0 Acute monoblastic/monocytic leukemiaNon-billable
- C93.00 Acute monoblastic/monocytic leukemia, not having achieved remission
- C93.01 Acute monoblastic/monocytic leukemia, in remission
- C93.02 Acute monoblastic/monocytic leukemia, in relapse
- C93.1 Chronic myelomonocytic leukemiaNon-billable
- C93.10 Chronic myelomonocytic leukemia not having achieved remission
- C93.11 Chronic myelomonocytic leukemia, in remission
- C93.12 Chronic myelomonocytic leukemia, in relapse
- C93.3 Juvenile myelomonocytic leukemiaNon-billable
- C93.30 Juvenile myelomonocytic leukemia, not having achieved remission
- C93.31 Juvenile myelomonocytic leukemia, in remission
- C93.32 Juvenile myelomonocytic leukemia, in relapse
- C93.9 Monocytic leukemia, unspecifiedNon-billable
- C93.90 Monocytic leukemia, unspecified, not having achieved remission
- C93.91 Monocytic leukemia, unspecified in remission
- C93.92 Monocytic leukemia, unspecified in relapse
- C93.Z Other monocytic leukemiaNon-billable
- C93.Z0 Other monocytic leukemia, not having achieved remission
- C93.Z1 Other monocytic leukemia, in remission
- C93.Z2 Other monocytic leukemia, in relapse
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C93 range.
Acute Monoblastic and Monocytic Leukemia
Acute myeloid leukemia in which 80% or more of the leukemic cells are of monocytic lineage, including monoblasts, promonocytes, and monocytes. Bleeding disorders are common presenting features.
Acute Monoblastic and Monocytic Leukemia in Remission
A finding of acute monoblastic and monocytic leukemia that is not growing and responds to treatment.
Acute Monocytic Leukemia
An acute myeloid leukemia in which the majority of monocytic cells are promonocytes. (WHO, 2001)
Leukemia, Myelomonocytic, Chronic
A myelodysplastic-myeloproliferative disease characterized by monocytosis, increased monocytes in the bone marrow, variable degrees of dysplasia, but an absence of immature granulocytes in the blood.
Leukemia, Myelomonocytic, Juvenile
A leukemia affecting young children characterized by SPLENOMEGALY, enlarged lymph nodes, rashes, and hemorrhages. Traditionally classed as a myeloproliferative disease, it is now considered a mixed myeloproliferative-mylelodysplastic disorder.
Recurrent Acute Monoblastic and Monocytic Leukemia
The reemergence of acute monoblastic and monocytic leukemia after a period of remission.
About the C93 Code Range
Monocytic leukemia falls within cancers of lymphoid, blood-forming, and related tissue.
The subdivisions distinguish acute monoblastic/monocytic leukemia (C93.0), chronic myelomonocytic leukemia (C93.1), and juvenile myelomonocytic leukemia (C93.3). They also separate unspecified (C93.9) from other monocytic leukemia (C93.Z). Each subdivision further distinguishes leukemia that has not achieved remission, is in remission, or is in relapse.
Questions About This Page
How many billable codes are in the C93 range?
Of the 21 codes in this range, 15 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 C93 range classify?
The range classifies monocytic leukemia. 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.
