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10.15.2019 Supplemental Data and Rules for Allowable Adjustments In some cases, supplemental data are not allowed for regular HEDIS reporting, but may supplemental data sources be used when following the Rules for Allowable Adjustments?

Yes. Supplemental data may be used for the denominator and the numerator when following the Rules for Allowable Adjustments. In general, the data are usable when the codes are in the value sets and the clinical intent of the measure is not changed, but there are restrictions for use of supplemental data in regular HEDIS reporting:

  1. For denominator calculation. The current restriction in regular HEDIS reporting is based on auditability, not on the data’s effect on the measure’s clinical intent. In Allowable Adjustments, files may be used if they meet all measure requirements.
  2. For Numerator calculation. The current restriction in regular HEDIS reporting is based on assessing paid claims vs. denied claims. In Allowable Adjustments, files may be used if they meet all requirements of the measure, even if the organization cannot determine payment status.

ALL 2020