C91.5
Non-billableAdult T-cell lymphoma/leukemia (HTLV-1-associated)
C91.5 is the ICD-10-CM code for Adult T-cell lymphoma/leukemia (HTLV-1-associated). It is a non-billable category code — use a more specific child code such as C91.50 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 Leukemia at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Acute variant of adult T-cell lymphoma/leukemia (HTLV-1-associated)
- •Chronic variant of adult T-cell lymphoma/leukemia (HTLV-1-associated)
- •Lymphomatoid variant of adult T-cell lymphoma/leukemia (HTLV-1-associated)
- •Smouldering variant of adult T-cell lymphoma/leukemia (HTLV-1-associated)
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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