Ductal carcinoma of the breast

Created Feb 2006
Reviewed Dec 2019


Patient has a diagnosis of ductal carcinoma in situ (DCIS) from biopsy, but has positive axilla lymph nodes.
If DCIS is not metastatic, how is this situation appropriately coded?


Based on advice given from the New Zealand Cancer Registry, DCIS is indeed not metastatic.  The lymph node cancer would have to be coded out separately.  This is a situation where it could be a secondary from another site, or it could be another cancer from the breast that was not picked up on pathology.

The correct codes to assign in this case would be:
D05.1   Intraductal carcinoma in situ of breast
C80.9   Malignant neoplasm, primary site unspecified
C77.3   Secondary and unspecified malignant neoplasm of axillary and upper limb lymph nodes.


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