In the CY 2018 Quality Payment Program final rule (82 FR 53716), CMS finalized a process to stabilize measure data throughout the performance period when a measure is impacted by ICD-10 updates mid-performance period. ICD-10 code updates are effective annually on October 1st. An annual review process was established to analyze and assess the quality measures to determine which measures are significantly impacted (determined by a 10% threshold) by ICD–10 code changes during the performance period. If a quality measure is impacted by 10% or more ICD-10 code changes, the performance score for the quality measure will be based only on the first 9 months of the 12-month performance period for those identified measures. CMS has published a list of 2018 quality measures that have been identified as impacted by this update in the Quality Payment Program resource library.