ICD-10 Code C95 – Leukemia of unspecified cell type (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C95 – Leukemia of unspecified cell type
What it is
C95 is used for leukemia when the record does not identify the specific cell type. It tells you the patient has leukemia, but the documentation is too general for a more specific code.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include anemia, infection, bleeding, fatigue, or abnormal blood counts, but you should code only what is documented.
When to use this code
Use C95 when the provider diagnoses leukemia but does not specify whether it is myeloid, lymphoid, or another type. It also fits when the chart states “leukemia, unspecified” or similar wording. If later documentation identifies the subtype, code the more specific diagnosis instead.
Do not use for
Do not use C95 when the leukemia type is documented more specifically, such as acute or chronic myeloid or lymphoid leukemia. Check documentation if the record only mentions abnormal blood counts without a confirmed leukemia diagnosis.
Coding tip
Look for the exact leukemia subtype in pathology, oncology, or discharge documentation before defaulting to C95.