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ICD-10 diagnosis code

D47.0 Histiocytic and mast cell tumours of uncertain and unknown behaviour

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D47.0 is the ICD-10 code for Histiocytic and mast cell tumours of uncertain and unknown behaviour. It is a four-character subcategory of D47 (Other neoplasms of uncertain or unknown behaviour of lymphoid, haematopoietic and related tissue), the most specific level in the WHO edition. It belongs to the block D37–D48 (Neoplasms of uncertain or unknown behaviour) in Chapter II, Neoplasms.

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

What D47.0 includes

Conditions and terms that are coded here.

  • Indolent systemic mastocytosis
  • Mast cell tumour NOS
  • Mastocytoma NOS
  • Systemic mastocytosis, associated with clonal haematopoietic non-mast-cell disease (SM-AHNMD)

What D47.0 excludes

Conditions that look similar but belong under another code.

  • mastocytosis (congenital) (cutaneous) Q82.2

D47.0 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

D47.0Histiocyt- och mastcellstumörer av osäker och okänd natur

NorwayICD-10-NO

D47.0Histiocyttær svulst eller mastcellesvulst med usikkert eller ukjent malignitetspotensial

DenmarkICD-10-DK

DD470Histiocytær eller mastcelle neoplasi af usikker eller ukendt karakter

  • DD470AMastcelle tumor UNS
  • DD470BIndolent mastocytosis
  • DD470CSystemisk mastocytose, associeret med klonal hæmatopoietisk non-mastcelle sygdom (SM-AHNMD)
FinlandICD-10-FI

D47.0Kasvutaipumukseltaan epäselvä tai tuntematton histiosyytti- tai syöttösolukasvain

GermanyICD-10-GM

D47.0Histiozyten- und Mastzelltumor unsicheren oder unbekannten Verhaltens

FranceICD-10-FR

D47.0Tumeurs à histiocytes et mastocytes à évolution imprévisible et inconnue

NetherlandsICD-10-NL

D47.0tumoren van histiocyten en mestcellen met onzeker of onbekend gedrag

United StatesICD-10-CM

Listed through more specific codes:

  • D47.01Cutaneous mastocytosis
  • D47.02Systemic mastocytosis
  • D47.09Other mast cell neoplasms of uncertain behavior

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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