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ICD-10 diagnosis code

C78.6 Secondary malignant neoplasm of retroperitoneum and peritoneum

This page in Swedish

C78.6 is the ICD-10 code for Secondary malignant neoplasm of retroperitoneum and peritoneum. It is a four-character subcategory of C78 (Secondary malignant neoplasm of respiratory and digestive organs), the most specific level in the WHO edition. It belongs to the block C76–C80 (Malignant neoplasms of ill-defined, secondary and unspecified sites) in Chapter II, Neoplasms.

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

What C78.6 includes

Conditions and terms that are coded here.

  • Malignant ascites NOS

C78.6 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

C78.6Sekundär malign tumör (metastas) i retroperitonealrummet och peritoneum

NorwayICD-10-NO

C78.6Metastase i retroperitoneum eller bukhinne

  • C78.60Mikrometastase i retroperitoneum eller bukhinne
DenmarkICD-10-DK

DC786Metastase i retroperitonale rum eller i peritoneum

  • DC786AMalign ascites UNS
  • DC786BMetastase i peritoneum
  • DC786CMetastase i retroperitoneale rum
  • DC786DCarcinomatosis peritonei
  • DC786EPseudomyxoma peritonei
GermanyICD-10-GM

C78.6Sekundäre bösartige Neubildung des Retroperitoneums und des Peritoneums

FranceICD-10-FR

C78.6Tumeur maligne secondaire du rétropéritoine et du péritoine

NetherlandsICD-10-NL

C78.6secundair maligne neoplasma van retroperitoneale ruimte en peritoneum

United StatesICD-10-CM

C78.6Secondary malignant neoplasm of retroperitoneum and peritoneum

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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