Leukemia of unspecified cell type (C95) ICD-10-CM
The C95 code range covers leukemia of unspecified cell type with 13 ICD-10-CM diagnosis codes. 9 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.
- personal history of leukemia Z85.6
Codes in the C95 Range 13 codes · 9 billable
- C95 Leukemia of unspecified cell typeNon-billable
- C95.0 Acute leukemia of unspecified cell typeNon-billable
- C95.00 Acute leukemia of unspecified cell type not having achieved remission
- C95.01 Acute leukemia of unspecified cell type, in remission
- C95.02 Acute leukemia of unspecified cell type, in relapse
- C95.1 Chronic leukemia of unspecified cell typeNon-billable
- C95.10 Chronic leukemia of unspecified cell type not having achieved remission
- C95.11 Chronic leukemia of unspecified cell type, in remission
- C95.12 Chronic leukemia of unspecified cell type, in relapse
- C95.9 Leukemia, unspecifiedNon-billable
- C95.90 Leukemia, unspecified not having achieved remission
- C95.91 Leukemia, unspecified, in remission
- C95.92 Leukemia, unspecified, in relapse
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C95 range.
Acute Leukemia in Remission
A finding of acute leukemia that is not growing and responds to treatment.
Chronic Leukemia in Remission
A finding of chronic leukemia that is not growing and responds to treatment.
Leukemia
A progressive, malignant disease of the blood-forming organs, characterized by distorted proliferation and development of leukocytes and their precursors in the blood and bone marrow. Leukemias were originally termed acute or chronic based on life expectancy but now are classified according to cellular maturity. Acute leukemias consist of predominately immature cells; chronic leukemias are composed of more mature cells. (From The Merck Manual, 2006)
Recurrent Acute Leukemia
The reemergence of acute leukemia after a period of remission.
Recurrent Chronic Leukemia
The reemergence of chronic leukemia after a period of remission.
About the C95 Code Range
This category describes leukemia when the cell type is not specified.
C95 separates acute leukemia (C95.0), chronic leukemia (C95.1), and leukemia without a specified form (C95.9). Each branch then 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 C95 range?
Of the 13 codes in this range, 9 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 C95 range classify?
The range classifies leukemia of unspecified 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.
