ICD-10 Code C95.0 – Acute leukemia of unspecified cell type (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C95.0 – Acute leukemia of unspecified cell type
What it is
C95.0 identifies an acute leukemia when the specific cell lineage is not documented. Use it for a newly diagnosed or active acute leukemia case when records do not specify myeloid, lymphoid, or another type.
Clinical signs
Clinical features vary; refer to documentation. Common leukemia findings may include fatigue, infection, bruising, bleeding, anemia, or abnormal blood counts, but the code depends on the documented diagnosis, not symptoms alone.
When to use this code
Use C95.0 when the provider documents acute leukemia and does not identify the cell type, and no more specific leukemia code is available. It may also fit pending workup notes if the diagnosis is clearly stated but subtype remains unspecified. Check documentation if the record later identifies a more specific leukemia.
Do not use for
Do not use C95.0 for chronic leukemia, remission status, or a leukemia subtype that is documented elsewhere. If the chart specifies myeloid, lymphoid, or another acute leukemia category, code that more specific diagnosis instead.
Coding tip
Query for the leukemia subtype when the record says only “acute leukemia,” because a more specific code is usually available.