Wiki Metastatic breast cancer to cerebrospinal fluid

[kseverson]

Patient had a lumber puncture and this shows metastatic breast cancer to the cerebrospinal fluid. What is the diagnosis code for the secondary cerebrospinal fluid if that's all that is stated?
(I have the dx code for the breast cancer)
Thank you!

 

[whatwouldyousay]

C79.49

 

[kseverson]

Ok thanks! That was the diagnosis code that I was going with, but I had seen differing opinions online and so I thought I would enter my question on this forum.