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Z Codes

General Information:

CompuNet Clinical Laboratories offers a wide variety of molecular diagnostic testing to our patients.  When billing claims for molecular testing to insurance carriers, your office may be required by the payer to provide a Z code on the insurance claim.  Z codes are test-specific and supplemental but do not replace the AMA CPT® code provided on the claim. 


Who do I contact for more information?

The general contractor for the Molecular Diagnostic Services (MolDX) Program is PalmettoGBA.  Click here to learn more about the MolDX program. 

If you have additional questions after viewing the website, click here to contact the MolDX program. 

Billing questions should be referred to the payor being billed. 


Where do I find the Z codes?

A catalog of laboratory Z codes is available via the McKesson Diagnostics Exchange.  Click here to register as a public user to view the catalog.  


Additional Resources: