ICD-10 Code C94 – Other leukemias of specified cell type (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C94 – Other leukemias of specified cell type
What it is
C94 identifies leukemias of a specified cell type that do not fit a more specific ICD-10 category. Use it when the record clearly names a leukemia subtype, but the documentation does not support a more exact code.
Clinical signs
Clinical features vary; refer to documentation. Leukemia may present with abnormal blood counts, fatigue, infections, easy bruising, bleeding, or organ enlargement, but you should code only what the provider documents.
When to use this code
Use C94 when the diagnosis states an “other” leukemia of a specified cell type and no more specific ICD-10 code applies. It is appropriate when the subtype is documented but not indexed elsewhere in the leukemia chapter. If the record is vague or incomplete, check documentation before assigning this code.
Do not use for
Do not use C94 for leukemia types that have a specific ICD-10 code, such as acute or chronic forms with defined categories. Do not use it when the chart only says “leukemia” without a specified cell type.
Coding tip
Match the exact leukemia wording in the provider note to the ICD-10 index before coding C94.