C91.50: Adult T-cell lymphoma/leukemia (HTLV-1-associated) not having achieved remission
C91.50 is the billable ICD-10-CM diagnosis code for Adult T-cell lymphoma/leukemia (HTLV-1-associated) not having achieved remission. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code C91.50?
C91.50 is the ICD-10-CM diagnosis code for Adult T-cell lymphoma/leukemia (HTLV-1-associated) not having achieved remission. It belongs to category C91 (Lymphoid leukemia).
Is C91.50 a billable code?
Yes. C91.50 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does C91.50 belong to?
C91.50 is part of ICD-10-CM category C91 — Lymphoid leukemia, which has 54 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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