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ICD-10 diagnosis code

C50.4 Malignant neoplasm: Upper-outer quadrant of breast

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C50.4 is the ICD-10 code for Malignant neoplasm: Upper-outer quadrant of breast. It is a four-character subcategory of C50 (Malignant neoplasm of breast), the most specific level in the WHO edition. It belongs to the block C50–C50 (Malignant neoplasm of breast) in Chapter II, Neoplasms.

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

C50.4 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

C50.4Malign tumör i övre yttre kvadranten av bröstkörteln

NorwayICD-10-NO

C50.4Ondartet svulst i øvre ytre kvadrant av bryst

DenmarkICD-10-DK

DC504Brystkræft i den øvre laterale kvadrant af mamma

FinlandICD-10-FI

C50.4Rinnan yläsivuneljänneksen syöpä

GermanyICD-10-GM

C50.4Oberer äußerer Quadrant der Brustdrüse

FranceICD-10-FR

C50.4Quadrant supéroexterne du sein

NetherlandsICD-10-NL

C50.4buitenste bovenkwadrant van mamma

United StatesICD-10-CM

Listed through more specific codes:

  • C50.411Malignant neoplasm of upper-outer quadrant of right female breast
  • C50.412Malignant neoplasm of upper-outer quadrant of left female breast
  • C50.419Malignant neoplasm of upper-outer quadrant of unspecified female breast
  • C50.421Malignant neoplasm of upper-outer quadrant of right male breast
  • C50.422Malignant neoplasm of upper-outer quadrant of left male breast
  • C50.429Malignant neoplasm of upper-outer quadrant of unspecified male breast

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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