Patients' primary care visits outside of their attributed primary care office, also called “leaked” patient visits, can have unintended consequences for Primary Care First participants. Beginning July 2022, PCF Cohort 1 will face a reduction in population-based payments based on their leakage rate. The payment adjustment will be based on their 2021 claims data and will roll forward quarterly. To calculate your leakage rate, divide the number of qualifying visits and services your attributed beneficiaries have made to care centers outside of your practice (for example, visits to urgent care centers) by the total number of qualifying visits and services your attributed beneficiaries have made. Calculating primary care leakage with claims data alone comes with some unintended challenges. Unfortunately, some circumstances can unfairly and negatively impact a practice’s leakage rate: Nuances classifying care delivered by provider team members: It’s di...