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Coding Breast cancers

Anna L

Contributor
Local Chapter Officer
Messages
14
Location
Morrisville, PA
If a patient has both Invasive and CIS can both cancers be coded? And how does Paget’s Disease (which codes to Invasive and is listed as Excludes 1 under CIS) affects the coding?

I did some research and found a coding guideline that states “Code the subsite with the “invasive” tumor when the pathology report identifies invasive tumor in one subsite and in situ tumor in a different subsite or subsites”. I interpret that guideline as being able to code both cancers. Few days ago out team had a meeting with a coding academy instructor who stated that you shouldn’t code CIS if patient has invasive cancer.

thank you for any assistance provided.

Anna
 
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