This measure shows ACO Attribution. It is broken down by Medicaid Eligibility Group (MEG) and shows what percentage of each MEG makes up the reported total.
This measure is a useful indicator of:
- How many actively attributed members the ACO has in a given month (which helps quantify the program’s scale)
- Any fluctuation in attribution on a month-to-month basis, overall and by MEG (which helps quantify population dynamism and the effects of changing Medicaid eligibility on prospective ACO attribution).
Member attribution to the VMNG ACO program is set prospectively (at the beginning of a performance year), and no new members are added to the population during a performance year. However, prospectively attributed members may be considered ineligible for attribution in a given month due to a number of factors, including eligibility changes (e.g. loss of Medicaid coverage); evidence of an additional source of insurance coverage or ageing into Medicare eligibility; death; or termination of a contractual relationship between an attributing provider practice and the ACO (at which time all members that had been attributed through that practice are no longer considered attributed to the ACO). Some members may subsequently become eligible for attribution again after losing eligibility in an earlier point in the year, but a 1-1.5% decrease in the number of PMPM payments made is expected month-to-month in a given program year. The more significant decrease (4%) in the number of members for whom payments were made between April and May highlights an instance in which an entire practice’s membership was removed from the ACO-attributed population due to termination of a contractual relationship between that practice and the ACO (OneCare Vermont).
Last updated: 10/21/2020