N60.4: Mammary duct ectasia

The milk ducts in your breast have become enlarged.

The breast is made up of fatty tissue, connective tissue and the mammary gland. Milk is produced in the mammary gland after pregnancy so that the child can be fed. The milk from the breast passes to the nipple through the milk ducts.

Enlarged milk ducts may occur, for example, when the sex hormones in your body are too high or too low. Your breast may also feel different. Your breast may also be painful, or your nipple may leak fluid.

Additional indicator

On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.

  • G: Confirmed diagnosis
  • V: Tentative diagnosis
  • Z: Condition after
  • A: Excluded diagnosis
  • L: Left
  • R: Right
  • B: Both sides

Further information


This information is not intended for self-diagnosis and does not replace professional medical advice from a doctor. If you find an ICD code on a personal medical document, please also note the additional indicator used for diagnostic confidence.
Your doctor will assist you with any health-related questions and explain the ICD diagnosis code to you in a direct consultation if necessary.


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