JB46.6

ICD-11 MMS 2026-01

Galactorrhoea

Description

Excessive or inappropriate lactation in females or males, and not necessarily related to pregnancy. Galactorrhoea can occur either unilaterally or bilaterally, and be profuse or sparse. Its most common cause is hyperprolactinemia.

Coding note from above levels

The codes included in this chapter are to be used for conditions related to or aggravated by the pregnancy, childbirth or by the puerperium (maternal causes or obstetric causes)

Index terms

  • Galactorrhoea
  • Oversupply of milk
  • excessive lactation
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  • excessive milk secretion
  • galactorrhoea associated with childbirth
  • galactorrhoea in pregnancy and the puerperium
  • increased postpartum lactation
  • milk hypersecretion
  • persistent secretion of milk associated with childbirth
  • polygalactia
  • Galactorrhoea, without mention of attachment difficulty
  • Galactorrhoea, with mention of attachment difficulty

Inclusions

  • Oversupply of milk

Excludes

  • GB23.4 – Galactorrhoea not associated with childbirth

Exclusions from above levels

  • 1C14 – Obstetrical tetanus
  • 22 – Injury, poisoning or certain other consequences of external causes
  • 23 – External causes (for mortality)
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  • 5A61.0 – Postpartum necrosis of pituitary gland
  • http://id.who.int/icd/entity/882114523 – Mental or behavioural disorders associated with pregnancy, childbirth or the puerperium

Sibling codes

  • JB46.0 – Retracted nipple associated with childbirth
  • JB46.1 – Cracked nipple associated with childbirth
  • JB46.2 – Other or unspecified disorders of breast associated with childbirth
  • JB46.3 – Agalactia
  • JB46.4 – Hypogalactia
  • JB46.5 – Suppressed lactation
  • JB46.7 – Other or unspecified disorders of lactation

Foundation entity

Galactorrhoea – http://id.who.int/icd/entity/936570562

Part of: JB46: Certain specified disorders of breast or lactation associated with childbirth › 18: Pregnancy, childbirth or the puerperium