GB22

ICD-11 MMS 2026-01

Hypertrophy of breast

Description

A condition affecting the breast, characterised by unilateral or bilateral enlargement or thickening of the connective tissues that exceeds 3% of the total body weight. This condition may be associated with increased histologic sensitivity to, or abnormally high levels of, prolactin, estrogen, and progesterone in the blood.

Index terms

  • Hypertrophy of breast
  • Hypertrophy of breast NOS
  • excessive development of breast
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  • hypertrophic breast
  • macromastia
  • mastoplastia
  • Hypertrophy of nipple
  • Epithelial hyperplasia of nipple
  • Senile hypertrophy of breast
  • Parenchymatous senile hypertrophy of breast
  • massive puberty hypertrophy of breast
  • Massive pubertal hypertrophy of breast
  • Breast hyperplasia
  • Gynaecomastia
  • hypertrophy of male breast

Exclusions from above levels

  • JB46 – Certain specified disorders of breast or lactation associated with childbirth
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • GB20 – Benign breast disease
  • GB21 – Inflammatory disorders of breast
  • GB23 – Certain specified disorders of breast
  • GB2Y – Other specified disorders of breast

Foundation entity

Hypertrophy of breast – http://id.who.int/icd/entity/2078176266

Allowed postcoordination axes

Part of: 16: Diseases of the genitourinary system