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ICD-10 diagnosis code

C91.5 Adult T-cell lymphoma/leukaemia [HTLV-1-associated]

This page in Swedish

C91.5 is the ICD-10 code for Adult T-cell lymphoma/leukaemia [HTLV-1-associated]. It is a four-character subcategory of C91 (Lymphoid leukaemia), the most specific level in the WHO edition. It belongs to the block C81–C96 (Malignant neoplasms, stated or presumed to be primary, of lymphoid, haematopoietic and related tissue) in Chapter II, Neoplasms.

Code type
Subcategory (4 characters)
Chapter
II · C00–D48
Classification
WHO ICD-10, 2019 version

What C91.5 includes

Conditions and terms that are coded here.

  • Acute
    • variant
  • Chronic
    • variant
  • Lymphomatoid
    • variant
  • Smouldering
    • variant

C91.5 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

C91.5Adult T-cellslymfom/leukemi (HTLV-1-associerad)

NorwayICD-10-NO

C91.5Adult T-celleleukemi eller lymfom

DenmarkICD-10-DK

DC915Adult T-celle lymfom/leukæmi (HTLV-1-associeret)

  • DC915AAdult T-celle lymfom/leukæmi (HTLV-1-associeret), akut variant
  • DC915BAdult T-celle lymfom/leukæmi (HTLV-1-associeret), kronisk variant
  • DC915CAdult T-celle lymfom/leukæmi (HTLV-1-associeret), lymfomatoid variant
  • DC915DAdult T-celle lymfom/leukæmi (HTLV-1-associeret), "smouldering" variant
FinlandICD-10-FI

C91.5Aikuisen T-soluleukemia

GermanyICD-10-GM

C91.5Adulte(s) T-Zell-Lymphom/Leukämie (HTLV-1-assoziiert)

FranceICD-10-FR

C91.5Leucémie/lymphome T de l’adulte (associée à HTLV-1)

NetherlandsICD-10-NL

C91.5lymfoom/leukemie met rijpe T-cellen (HTLV-1 geassocieerd)

United StatesICD-10-CM

Listed through more specific codes:

  • C91.50Adult T-cell lymphoma/leukemia (HTLV-1-associated) not having achieved remission
  • C91.51Adult T-cell lymphoma/leukemia (HTLV-1-associated), in remission
  • C91.52Adult T-cell lymphoma/leukemia (HTLV-1-associated), in relapse

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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