Question: 20190043

Status


Final

Category


#1:   Diagnostic confirmation
#2:  
#3:  


References


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Question


Diagnostic Confirmation: How is Diagnostic Confirmation coded for malignancies diagnosed by a FoundationOne Liquid biopsy/assay involving circulating tumor DNA in blood only? See Discussion.
 



Discussion


Example: FoundationAct assay of circulating tumor DNA in blood sample results: Tumor type = non-small cell lung carcinoma, NOS, with 3 genomic alterations identified: NRAS Q61H, IDH2 R140Q and TP53 V172F. The tumor was identified on imaging and the imaging findings were not clearly what one would expect to see with a SCLC.



Answer


Code Diagnostic Confirmation as 7, Radiology and other imaging techniques without microscopic confirmation for this case. Results of a FoundationOne Liquid biopsy/assay are not specific enough to diagnose this lung malignancy.



History




Last Updated


05/30/2019

Date Finalized


07/19/2019