2C65

ICD-11 MMS 2026-01

Hereditary breast and ovarian cancer syndrome

Coding note from above levels

For use of this category, reference should be made to the mortality coding rules and guidelines in the Reference Guide.

Index terms

  • Hereditary breast and ovarian cancer syndrome
  • BRCA1/2-associated hereditary breast and ovarian cancer syndrome

Exclusions from above levels

  • 2B56.2 – Angiosarcoma of breast
  • 2E0Y – Nipple metastasis
  • http://id.who.int/icd/entity/1706880799 – Malignant neoplasm of skin of breast
Show allHide
  • http://id.who.int/icd/entity/1965082709 – Malignant mesenchymal neoplasms
  • http://id.who.int/icd/entity/879154182 – Neoplasms of central nervous system or related structures
  • http://id.who.int/icd/entity/944754984 – Neoplasms of haematopoietic or lymphoid tissues

Sibling codes

  • 2C60 – Carcinoma of breast, specialised type
  • 2C61 – Invasive carcinoma of breast
  • 2C62 – Inflammatory carcinoma of breast
  • 2C63 – Malignant phyllodes tumour of breast
  • 2C64 – Solid papillary carcinoma of breast with evidence of invasion
  • 2C6Y – Other specified malignant neoplasms of breast
  • 2C6Z – Malignant neoplasms of breast, unspecified

Foundation entity

Hereditary breast and ovarian cancer syndrome – http://id.who.int/icd/entity/1258896144

Allowed postcoordination axes

Part of: 02: Neoplasms