2 QW modifier is added to report use of CLIA-waived test system(s) for Medicare and Medicaid claims
3 59 modifier is used to report procedures that are distinct or independent, such as performing the same procedure (that uses the same procedure code) for testing of a different specimen or different strain. Use modifier 59 when separate results are reported for different species or strains described by the same CPT code (AMA CPT Assistant, May 2009 Vol 19 Issue 5). Alternatively, it is possible that when reporting multiple results using the same CPT code, some payers may not require use of a modifier and/or may require use of the units of service box on the claim form.
and State law, it is the individual provider's responsibility
to determine appropriate coding, charges and claims
for a particular service.Policies
regarding appropriate coding and payment levels can
vary greatly from payer to payer and change over time.
Quidel Corporation strongly recommends that providers
contact their contracted payers to determine appropriate
coding and charge or payment levels prior to submitting