Which modifier is used for alternative laboratory platform testing?

The correct choice for identifying the modifier used for alternative laboratory platform testing is Modifier QW. This modifier indicates that a laboratory test is performed using a waived test or an alternative platform that is typically less complex, allowing for greater accessibility in various testing environments.

Modifier QW is specifically designated for tests that are approved under the Clinical Laboratory Improvement Amendments (CLIA) for point-of-care testing, reflecting compliance with regulations for tests that can be performed outside of standard laboratory settings. Utilizing Modifier QW helps in distinguishing these tests on claims submitted to payers, ensuring appropriate reimbursement and recognition of the testing method used.

Understanding the specific use of modifiers in billing and coding is essential for compliance and revenue cycle management in medical practices, illustrating the importance of using the correct modifier for each service provided.