C91.9
Non-billableLymphoid leukemia, unspecified
C91.9 is the ICD-10-CM code for Lymphoid leukemia, unspecified. It is a non-billable category code — use a more specific child code such as C91.90 for billing.
C00-D49 Neoplasms
What this means — in plain language
MedlinePlus · NIHWhat is leukemia? Leukemia is a term for cancers of the blood cells. Leukemia starts in blood-forming tissues such as the bone marrow. Your bone marrow makes the cells which will develop into white blood cells, red blood cells, and platelets. Each type of cell has a different job: White blood cells help your body fight infection Red blood cells deliver oxygen from your lungs to your tissues and organs Platelets help…
Read more about Acute Lymphocytic Leukemia at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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