Question:
We operate CLIA moderate-complexity laboratories. Our testing menu offers several otherwise CLIA-waived tests (e.g., influenza testing, Strep A testing, certain chemistry analyses) in addition to some moderate-complexity testing such as a complete blood count and blood gases.
Are we REQUIRED to use a -QW modifier on those waived tests, or are we simply ALLOWED to use the modifier but not otherwise required?
Answer:
Modifier QW (CLIA-waived test) was implemented for use by providers who hold a CLIA waiver to perform simplified analysis tests. The types of tests requiring use of QW modifier are commonly performed in the physician office or clinic setting. Hospital laboratories are not required to append this modifier to tests performed in the inpatient or outpatient setting.
CPT® copyright 2024 American Medical Association (AMA). All rights reserved.
Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
CPT is a registered trademark of the American Medical Association.
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