Modifier Q0

Investigational clinical service provided in a clinical research study that is in an approved clinical research study

Correct Use

  • When an investigational service is performed as part of an approved clinical research study
    • Investigational clinical services are defined as those items and services that are being investigated as an objective within study
    • Investigational clinical services may include items or services that are approved, unapproved or otherwise covered (or not covered) under Medicare

Incorrect Use

  • When service is not part of an approved clinical research study
  • When service is not investigative in nature

Resources

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