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ICD-10 diagnosis code

C84.5 Other mature T/NK-cell lymphomas

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C84.5 is the ICD-10 code for Other mature T/NK-cell lymphomas. It is a four-character subcategory of C84 (Mature T/NK-cell lymphomas), 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 C84.5 excludes

Conditions that look similar but belong under another code.

  • angioimmunoblastic T-cell lymphoma C86.5
  • blastic NK-cell lymphoma C86.4
  • enteropathy-type T-cell lymphoma C86.2
  • extranodal NK-cell lymphoma, nasal type C86.0
  • hepatosplenic T-cell lymphoma C86.1
  • primary cutaneous CD30-positive T-cell proliferations C86.6
  • subcutaneous panniculitis-like T-cell lymphoma C86.3
  • T-cell leukaemia C91.-

Coding notes

  • If T-cell lineage or involvement is mentioned in conjunction with a specific lymphoma, code to the more specific description.

C84.5 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

C84.5Andra mogna T/NK-cellslymfom

NorwayICD-10-NO

C84.5Annet modent T/NK-cellelymfom

DenmarkICD-10-DK

DC845Andet modent NK/T-celle lymfom

FinlandICD-10-FI

Listed through more specific codes:

  • C84.51Angioimmunoblastinen T-solulymfooma
  • C84.52Angiosentrinen T-solulymfooma
  • C84.59Muu tai määrittämätön T-solujen non-Hodgkin lymfooma
GermanyICD-10-GM

C84.5Sonstige reifzellige T/NK-Zell-Lymphome

FranceICD-10-FR

C84.5Autres lymphomes à cellules T/NK matures

NetherlandsICD-10-NL

C84.5lymfomen met rijpe T/NK-cellen, overig gespecificeerd

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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