GB20

ICD-11 MMS 2026-01

Benign breast disease

Description

Any disease affecting females, characterised by benign, noncancerous lesions in the breast, leading to pathological changes to (and discomfort of) the breast or breast tissue.

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

Child codes

  • GB20.0 – Fibrocystic change of breast
  • GB20.1 – Fibroadenosis of breast
  • GB20.Y – Other specified benign breast disease
  • GB20.Z – Benign breast disease, unspecified

Foundation children elsewhere

  • GB21.0 – Breast abscess
  • GC79 – Disorders of breast reduction
  • GC7A – Disorders of breast augmentation

Sibling codes

  • GB21 – Inflammatory disorders of breast
  • GB22 – Hypertrophy of breast
  • GB23 – Certain specified disorders of breast
  • GB2Y – Other specified disorders of breast

Foundation entity

Benign breast disease – http://id.who.int/icd/entity/1782114659

Allowed postcoordination axes

Part of: 16: Diseases of the genitourinary system