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ICD-10 diagnosis code

C84.4 Peripheral T-cell lymphoma, not elsewhere classified

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C84.4 is the ICD-10 code for Peripheral T-cell lymphoma, not elsewhere classified. 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 C84.4 includes

Conditions and terms that are coded here.

  • Lennert’s lymphoma
  • Lymphoepithelioid lymphoma

C84.4 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

C84.4Perifert T-cellslymfom, ej klassificerat

NorwayICD-10-NO

C84.4Perifert T-cellelymfom, ikke klassifisert annet sted

DenmarkICD-10-DK

DC844Perifert T-celle lymfom UNS

  • DC844FLymfoepitelioidt lymfom
  • DC844HModent T-celle lymfom UNS
FinlandICD-10-FI

C84.4Perifeerinen T-solulymfooma

  • C84.41Perifeerinen T-solulymfooma, keskikokoinen solutyyppi
  • C84.42Perifeerinen T-solulymfooma, keskikokoinen ja suuri solutyyppi
  • C84.43Perifeerinen T-solulymfooma, suuri solutyyppi
  • C84.49Perifeerinen T-solulymfooma, epämääräinen solutyyppi
GermanyICD-10-GM

C84.4Peripheres T-Zell-Lymphom, nicht spezifiziert

FranceICD-10-FR

C84.4Lymphome périphérique à cellules T, non classé ailleurs

NetherlandsICD-10-NL

C84.4perifeer T-cellymfoom, niet elders geclassificeerd

United StatesICD-10-CM

Listed through more specific codes:

  • C84.40Peripheral T-cell lymphoma, not elsewhere classified, unspecified site
  • C84.41Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of head, face, and neck
  • C84.42Peripheral T-cell lymphoma, not elsewhere classified, intrathoracic lymph nodes
  • C84.43Peripheral T-cell lymphoma, not elsewhere classified, intra-abdominal lymph nodes
  • C84.44Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of axilla and upper limb
  • C84.45Peripheral T-cell lymphoma, not elsewhere classified, lymph nodes of inguinal region and lower limb
  • C84.46Peripheral T-cell lymphoma, not elsewhere classified, intrapelvic lymph nodes
  • C84.47Peripheral T-cell lymphoma, not elsewhere classified, spleen
  • and 3 more national subcodes

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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