ICD-10 Code C94.80 – Other specified leukemias not having achieved remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C94.80 – Other specified leukemias not having achieved remission
What it is
This code identifies a leukemia that is specifically documented but does not fit a more exact leukemia category, and the disease has not gone into remission. Use it when the provider names the leukemia type and states it is active.
Clinical signs
Clinical features vary; refer to documentation. Common leukemia findings may include abnormal blood counts, fatigue, bruising, infections, or other marrow failure signs, but the exact presentation depends on the leukemia subtype.
When to use this code
Use C94.80 when the record clearly documents an “other specified” leukemia and also states that remission has not been achieved. This is appropriate for active disease at diagnosis, persistent disease, or relapse when the provider does not assign a more specific leukemia code.
If the chart only says leukemia without type, check documentation before coding. Do not assume remission status; it must be stated or clearly supported by the record.
Do not use for
Do not use this code for leukemia in remission, unspecified leukemia, or a more specific leukemia diagnosis that has its own code. Check documentation if the disease type or remission status is unclear.
Coding tip
Confirm both the leukemia subtype and the “not having achieved remission” wording before assigning C94.80.