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Data Documentation
Master Beneficiary Summary File (MBSF) Base
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File Version:
CCW Data Documentation 4/15/19
CCW Record Layout - MBSF ABCD_Version Feb2024.xlsx
13.56 KB
File Version:
CCW Data Documentation 4/15/19
CCW Codebook - MBSF ABCD_Version Feb2024.pdf
543.26 KB
Base (A/B/C/D) segment
Number
SAS Name
Variable Name
1
BENE_ID
Encrypted CCW Beneficiary ID
2
BENE_ENROLLMT_REF_YR
Reference Year (Base)
3
ENRL_SRC
Enrollment Source
4
SAMPLE_GROUP
Medicare Sample Group Indicator
5
ENHANCED_FIVE_PERCENT_FLAG
Enhanced Medicare 5% Sample Indicator
6
CRNT_BIC_CD
Current Beneficiary Identification Code
7
STATE_CODE
State code for beneficiary (SSA code)
8
COUNTY_CD
County code for beneficiary (SSA code)
9
ZIP_CD
Zip code for beneficiary
10
STATE_CNTY_FIPS_CD_01
State and county FIPS code - January
11
STATE_CNTY_FIPS_CD_02
State and county FIPS code - February
12
STATE_CNTY_FIPS_CD_03
State and county FIPS code - March
13
STATE_CNTY_FIPS_CD_04
State and county FIPS code - April
14
STATE_CNTY_FIPS_CD_05
State and county FIPS code - May
15
STATE_CNTY_FIPS_CD_06
State and county FIPS code - June
16
STATE_CNTY_FIPS_CD_07
State and county FIPS code - July
17
STATE_CNTY_FIPS_CD_08
State and county FIPS code - August
18
STATE_CNTY_FIPS_CD_09
State and county FIPS code - September
19
STATE_CNTY_FIPS_CD_10
State and county FIPS code - October
20
STATE_CNTY_FIPS_CD_11
State and county FIPS code - November
21
STATE_CNTY_FIPS_CD_12
State and county FIPS code - December
22
AGE_AT_END_REF_YR
Age of beneficiary at end of year
23
BENE_BIRTH_DT
Beneficiary date of birth
24
VALID_DEATH_DT_SW
Valid Date of Death Switch
25
BENE_DEATH_DT
Date of Death
26
SEX_IDENT_CD
Sex
27
BENE_RACE_CD
Beneficiary Race Code (Base)
28
RTI_RACE_CD
Research Triangle Institute (RTI) Race Code
29
COVSTART
Medicare Coverage Start Date
30
ENTLMT_RSN_ORIG
Original Reason for Entitlement Code
31
ENTLMT_RSN_CURR
Current Reason for Entitlement Code
32
ESRD_IND
End-Stage Renal Disease (ESRD) Indicator
33
MDCR_STATUS_CODE_01
Medicare Status Code - January
34
MDCR_STATUS_CODE_02
Medicare Status Code - February
35
MDCR_STATUS_CODE_03
Medicare Status Code - March
36
MDCR_STATUS_CODE_04
Medicare Status Code - April
37
MDCR_STATUS_CODE_05
Medicare Status Code - May
38
MDCR_STATUS_CODE_06
Medicare Status Code - June
39
MDCR_STATUS_CODE_07
Medicare Status Code - July
40
MDCR_STATUS_CODE_08
Medicare Status Code - August
41
MDCR_STATUS_CODE_09
Medicare Status Code - September
42
MDCR_STATUS_CODE_10
Medicare Status Code - October
43
MDCR_STATUS_CODE_11
Medicare Status Code - November
44
MDCR_STATUS_CODE_12
Medicare Status Code - December
45
BENE_PTA_TRMNTN_CD
Part A Termination Code
46
BENE_PTB_TRMNTN_CD
Part B Termination Code
47
BENE_HI_CVRAGE_TOT_MONS
Part A Months Count
48
BENE_SMI_CVRAGE_TOT_MONS
Part B Months Count
49
BENE_STATE_BUYIN_TOT_MONS
State Buy-In Coverage Count
50
BENE_HMO_CVRAGE_TOT_MONS
HMO Coverage Count
51
PTD_PLAN_CVRG_MONS
Months of Part D Coverage
52
RDS_CVRG_MONS
Months of Retiree Drug Subsidy Coverage
53
DUAL_ELGBL_MONS
Months of Dual Eligibility
54
MDCR_ENTLMT_BUYIN_IND_01
Medicare Entitlement/Buy-In Indicator - January
55
MDCR_ENTLMT_BUYIN_IND_02
Medicare Entitlement/Buy-In Indicator - February
56
MDCR_ENTLMT_BUYIN_IND_03
Medicare Entitlement/Buy-In Indicator - March
57
MDCR_ENTLMT_BUYIN_IND_04
Medicare Entitlement/Buy-In Indicator - April
58
MDCR_ENTLMT_BUYIN_IND_05
Medicare Entitlement/Buy-In Indicator - May
59
MDCR_ENTLMT_BUYIN_IND_06
Medicare Entitlement/Buy-In Indicator - June
60
MDCR_ENTLMT_BUYIN_IND_07
Medicare Entitlement/Buy-In Indicator - July
61
MDCR_ENTLMT_BUYIN_IND_08
Medicare Entitlement/Buy-In Indicator - August
62
MDCR_ENTLMT_BUYIN_IND_09
Medicare Entitlement/Buy-In Indicator - September
63
MDCR_ENTLMT_BUYIN_IND_10
Medicare Entitlement/Buy-In Indicator - October
64
MDCR_ENTLMT_BUYIN_IND_11
Medicare Entitlement/Buy-In Indicator - November
65
MDCR_ENTLMT_BUYIN_IND_12
Medicare Entitlement/Buy-In Indicator - December
66
HMO_IND_01
HMO Indicator - January
67
HMO_IND_02
HMO Indicator - February
68
HMO_IND_03
HMO Indicator - March
69
HMO_IND_04
HMO Indicator - April
70
HMO_IND_05
HMO Indicator - May
71
HMO_IND_06
HMO Indicator - June
72
HMO_IND_07
HMO Indicator - July
73
HMO_IND_08
HMO Indicator - August
74
HMO_IND_09
HMO Indicator - September
75
HMO_IND_10
HMO Indicator - October
76
HMO_IND_11
HMO Indicator - November
77
HMO_IND_12
HMO Indicator - December
Part C
Number
SAS Name
Variable Name
1
PTC_CNTRCT_ID_01
Part C Contract Number - January
2
PTC_CNTRCT_ID_02
Part C Contract Number - February
3
PTC_CNTRCT_ID_03
Part C Contract Number - March
4
PTC_CNTRCT_ID_04
Part C Contract Number - April
5
PTC_CNTRCT_ID_05
Part C Contract Number - May
6
PTC_CNTRCT_ID_06
Part C Contract Number - June
7
PTC_CNTRCT_ID_07
Part C Contract Number - July
8
PTC_CNTRCT_ID_08
Part C Contract Number - August
9
PTC_CNTRCT_ID_09
Part C Contract Number - September
10
PTC_CNTRCT_ID_10
Part C Contract Number - October
11
PTC_CNTRCT_ID_11
Part C Contract Number - November
12
PTC_CNTRCT_ID_12
Part C Contract Number - December
13
PTC_PBP_ID_01
Part C PBP Number - January
14
PTC_PBP_ID_02
Part C PBP Number - February
15
PTC_PBP_ID_03
Part C PBP Number - March
16
PTC_PBP_ID_04
Part C PBP Number - April
17
PTC_PBP_ID_05
Part C PBP Number - May
18
PTC_PBP_ID_06
Part C PBP Number - June
19
PTC_PBP_ID_07
Part C PBP Number - July
20
PTC_PBP_ID_08
Part C PBP Number - August
21
PTC_PBP_ID_09
Part C PBP Number - September
22
PTC_PBP_ID_10
Part C PBP Number - October
23
PTC_PBP_ID_11
Part C PBP Number - November
24
PTC_PBP_ID_12
Part C PBP Number - December
25
PTC_PLAN_TYPE_CD_01
Part C Plan Type Code - January
26
PTC_PLAN_TYPE_CD_02
Part C Plan Type Code - February
27
PTC_PLAN_TYPE_CD_03
Part C Plan Type Code - March
28
PTC_PLAN_TYPE_CD_04
Part C Plan Type Code - April
29
PTC_PLAN_TYPE_CD_05
Part C Plan Type Code - May
30
PTC_PLAN_TYPE_CD_06
Part C Plan Type Code - June
31
PTC_PLAN_TYPE_CD_07
Part C Plan Type Code - July
32
PTC_PLAN_TYPE_CD_08
Part C Plan Type Code - August
33
PTC_PLAN_TYPE_CD_09
Part C Plan Type Code - September
34
PTC_PLAN_TYPE_CD_10
Part C Plan Type Code - October
35
PTC_PLAN_TYPE_CD_11
Part C Plan Type Code - November
36
PTC_PLAN_TYPE_CD_12
Part C Plan Type Code - December
Part D
Number
SAS Name
Variable Name
1
PTD_CNTRCT_ID_01
Monthly Part D Contract Number - January
2
PTD_CNTRCT_ID_02
Monthly Part D Contract Number - February
3
PTD_CNTRCT_ID_03
Monthly Part D Contract Number - March
4
PTD_CNTRCT_ID_04
Monthly Part D Contract Number - April
5
PTD_CNTRCT_ID_05
Monthly Part D Contract Number - May
6
PTD_CNTRCT_ID_06
Monthly Part D Contract Number - June
7
PTD_CNTRCT_ID_07
Monthly Part D Contract Number - July
8
PTD_CNTRCT_ID_08
Monthly Part D Contract Number - August
9
PTD_CNTRCT_ID_09
Monthly Part D Contract Number - September
10
PTD_CNTRCT_ID_10
Monthly Part D Contract Number - October
11
PTD_CNTRCT_ID_11
Monthly Part D Contract Number - November
12
PTD_CNTRCT_ID_12
Monthly Part D Contract Number - December
13
PTD_PBP_ID_01
Monthly Part D Plan Benefit Package Number - January
14
PTD_PBP_ID_02
Monthly Part D Plan Benefit Package Number - February
15
PTD_PBP_ID_03
Monthly Part D Plan Benefit Package Number - March
16
PTD_PBP_ID_04
Monthly Part D Plan Benefit Package Number - April
17
PTD_PBP_ID_05
Monthly Part D Plan Benefit Package Number - May
18
PTD_PBP_ID_06
Monthly Part D Plan Benefit Package Number - June
19
PTD_PBP_ID_07
Monthly Part D Plan Benefit Package Number - July
20
PTD_PBP_ID_08
Monthly Part D Plan Benefit Package Number - August
21
PTD_PBP_ID_09
Monthly Part D Plan Benefit Package Number - September
22
PTD_PBP_ID_10
Monthly Part D Plan Benefit Package Number - October
23
PTD_PBP_ID_11
Monthly Part D Plan Benefit Package Number - November
24
PTD_PBP_ID_12
Monthly Part D Plan Benefit Package Number - December
25
PTD_SGMT_ID_01
Monthly Part D Market Segment Identifier - January
26
PTD_SGMT_ID_02
Monthly Part D Market Segment Identifier - February
27
PTD_SGMT_ID_03
Monthly Part D Market Segment Identifier - March
28
PTD_SGMT_ID_04
Monthly Part D Market Segment Identifier - April
29
PTD_SGMT_ID_05
Monthly Part D Market Segment Identifier - May
30
PTD_SGMT_ID_06
Monthly Part D Market Segment Identifier - June
31
PTD_SGMT_ID_07
Monthly Part D Market Segment Identifier - July
32
PTD_SGMT_ID_08
Monthly Part D Market Segment Identifier - August
33
PTD_SGMT_ID_09
Monthly Part D Market Segment Identifier - September
34
PTD_SGMT_ID_10
Monthly Part D Market Segment Identifier - October
35
PTD_SGMT_ID_11
Monthly Part D Market Segment Identifier - November
36
PTD_SGMT_ID_12
Monthly Part D Market Segment Identifier - December
37
RDS_IND_01
Part D Retiree Drug Subsidy Indicator - January
38
RDS_IND_02
Part D Retiree Drug Subsidy Indicator - February
39
RDS_IND_03
Part D Retiree Drug Subsidy Indicator - March
40
RDS_IND_04
Part D Retiree Drug Subsidy Indicator - April
41
RDS_IND_05
Part D Retiree Drug Subsidy Indicator - May
42
RDS_IND_06
Part D Retiree Drug Subsidy Indicator - June
43
RDS_IND_07
Part D Retiree Drug Subsidy Indicator - July
44
RDS_IND_08
Part D Retiree Drug Subsidy Indicator - August
45
RDS_IND_09
Part D Retiree Drug Subsidy Indicator - September
46
RDS_IND_10
Part D Retiree Drug Subsidy Indicator - October
47
RDS_IND_11
Part D Retiree Drug Subsidy Indicator - November
48
RDS_IND_12
Part D Retiree Drug Subsidy Indicator - December
49
DUAL_STUS_CD_01
Monthly Medicare-Medicaid dual eligibility code - January
50
DUAL_STUS_CD_02
Monthly Medicare-Medicaid dual eligibility code - February
51
DUAL_STUS_CD_03
Monthly Medicare-Medicaid dual eligibility code - March
52
DUAL_STUS_CD_04
Monthly Medicare-Medicaid dual eligibility code - April
53
DUAL_STUS_CD_05
Monthly Medicare-Medicaid dual eligibility code - May
54
DUAL_STUS_CD_06
Monthly Medicare-Medicaid dual eligibility code - June
55
DUAL_STUS_CD_07
Monthly Medicare-Medicaid dual eligibility code - July
56
DUAL_STUS_CD_08
Monthly Medicare-Medicaid dual eligibility code - August
57
DUAL_STUS_CD_09
Monthly Medicare-Medicaid dual eligibility code - September
58
DUAL_STUS_CD_10
Monthly Medicare-Medicaid dual eligibility code - October
59
DUAL_STUS_CD_11
Monthly Medicare-Medicaid dual eligibility code - November
60
DUAL_STUS_CD_12
Monthly Medicare-Medicaid dual eligibility code - December
61
CST_SHR_GRP_CD_01
Monthly cost sharing group under Part D low-income subsidy - January
62
CST_SHR_GRP_CD_02
Monthly cost sharing group under Part D low-income subsidy - February
63
CST_SHR_GRP_CD_03
Monthly cost sharing group under Part D low-income subsidy - March
64
CST_SHR_GRP_CD_04
Monthly cost sharing group under Part D low-income subsidy - April
65
CST_SHR_GRP_CD_05
Monthly cost sharing group under Part D low-income subsidy - May
66
CST_SHR_GRP_CD_06
Monthly cost sharing group under Part D low-income subsidy - June
67
CST_SHR_GRP_CD_07
Monthly cost sharing group under Part D low-income subsidy - July
68
CST_SHR_GRP_CD_08
Monthly cost sharing group under Part D low-income subsidy - August
69
CST_SHR_GRP_CD_09
Monthly cost sharing group under Part D low-income subsidy - September
70
CST_SHR_GRP_CD_10
Monthly cost sharing group under Part D low-income subsidy - October
71
CST_SHR_GRP_CD_11
Monthly cost sharing group under Part D low-income subsidy - November
72
CST_SHR_GRP_CD_12
Monthly cost sharing group under Part D low-income subsidy - December