LABEL: Monthly cost sharing group under Part D low-income subsidy DESCRIPTION: This variable indicates the beneficiary’s Part D low-income subsidy cost sharing group for a given month (August). The Part D benefit requires enrollees to pay both premiums and cost-sharing, but the program also has a low-income subsidy (LIS) that covers some or all of those costs for certain low-income individuals, including deductibles and cost-sharing during the coverage gap. SHORT NAME: CSTSHR08 LONG NAME: CST_SHR_GRP_CD_08 TYPE: CHAR LENGTH: 2 SOURCE: CMS Enrollment Database (EDB) VALUES: 00 = Not Medicare enrolled for the month ** = Enrolled in Medicare A and/or B, but no Part D enrollment data for the beneficiary. (This status was indicated as 'XX' for 2006-2009) Enrolled in Medicare A and/or B and enrolled in Part D and: 01 = Beneficiary enrolled in Parts A and/or B, and Part D; deemed eligible for LIS with 100% premium subsidy and no copayment 02 = Beneficiary enrolled in Parts A and/or B, and Part D; deemed eligible for LIS with 100% premium subsidy and low copayment 03 = Beneficiary enrolled in Parts A and/or B, and Part D; deemed eligible for LIS with 100% premium subsidy and high copayment 04 = Beneficiary enrolled in Parts A and/or B, and Part D; enrolled in LIS with 100% premium subsidy and high copayment 05 = Beneficiary enrolled in Parts A and/or B, and Part D; enrolled in LIS with 100% premium subsidy and 15% copayment 06 = Beneficiary enrolled in Parts A and/or B, and Part D; enrolled in LIS with 75% premium subsidy and 15% copayment 07 = Beneficiary enrolled in Parts A and/or B, and Part D; enrolled in LIS with 50% premium subsidy and 15% copayment 08 = Beneficiary enrolled in Parts A and/or B, and Part D; enrolled in LIS with 25% premium subsidy and 15% copayment 09 = Beneficiary enrolled in Parts A and/or B, and Part D; no premium or cost sharing subsidy Enrolled in Medicare A and/or B, but not Part D enrolled and: 10 = Beneficiary enrolled in Parts A and/or B, but not Part D; employer receives RDS subsidy 11 = Beneficiary enrolled in Parts A and/or B, but not Part D; beneficiary has creditable coverage from a plan that does not receive the RDS subsidy 12 = Beneficiary enrolled in Parts A and/or B, but not Part D; not in an RDS plan and no creditable coverage 13 = Beneficiary enrolled in Parts A and/or B, but not Part D; none of the above conditions have been met COMMENT: CMS identifies beneficiaries with fully-subsidized Part D coverage by looking for individuals that have a 01, 02, or 03 for the month. Other beneficiaries who are eligible for the LIS but do not receive a full subsidy have a 04, 05, 06, 07, or 08. The remaining values indicate that the individual is not eligible for subsidized Part D coverage. There are 12 monthly variables - where the 01 through 12 at the end of the variable name correspond with the month (e.g., 01 is January and 12 is December).