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TMSIS Dataguide Medicaid.gov
Version 3.24.0

MEDICARE-BENEFICIARY-IDENTIFIER

Data Element

DE Number

CLT168

System DE Number

CLT.002.168

File Name

CLT - CLAIM LONG-TERM CARE

File Segment Number

CLT00002

File Segment Name

CLAIM-HEADER-RECORD-LT

Last updated

No Updates

Overview Valid Values Related Rules Related DQ Measures Other Instances
Definition The Medicare Beneficiary Identifier (MBI) is a randomly generated identifier used to identify all Medicare beneficiaries. It replaced the previously-used SSN-based Medicare HIC Number (HICN). To prevent identify theft, among other reasons, HICN gradually were retired and replaced by the MBI over the course of 2018 and 2019. Starting in 2020, the MBI became the primary identifier for Medicare beneficiaries.
Size X(12)
FLF Start Position 1121
FLF Stop Position 1132
Segment Key Field Identifier Not Applicable
Coding Requirements 1. Conditional
2. Value must be an 11-character string
3. Character 1 must be numeric values 1 thru 9
4. Character 2 must be alphabetic values A thru Z (minus S, L, O, I, B, Z)
5. Character 3 must be alphanumeric values 0 thru 9 or A thru Z (minus S, L, O, I, B, Z)
6. Character 4 must be numeric values 0 thru 9
7. Character 5 must be alphabetic values A thru Z (minus S, L, O, I, B, Z)
8. Character 6 must be alphanumeric values 0 thru 9 or A thru Z (minus S, L, O, I, B, Z)
9. Character 7 must be numeric values 0 thru 9
10. Character 8 must be alphabetic values A thru Z (minus S, L, O, I, B, Z)
11. Character 9 must be alphabetic values A thru Z (minus S, L, O, I, B, Z)
12. Character 10 must be numeric values 0 thru 9
13. Character 11 must be numeric values 0 thru 9
14. Value must not contain a pipe or asterisk symbols
Valid Value Code Set Valid Value Code Valid Value Name Valid Value Description Effective Start Date Effective End Date
DE Number System DE Number DE Name File Segment Number File Segment Name
CIP222 CIP.002.222 MEDICARE-BENEFICIARY-IDENTIFIER CIP00002 CLAIM-HEADER-RECORD-IP
COT147 COT.002.147 MEDICARE-BENEFICIARY-IDENTIFIER COT00002 CLAIM-HEADER-RECORD-OT
CRX105 CRX.002.105 MEDICARE-BENEFICIARY-IDENTIFIER CRX00002 CLAIM-HEADER-RECORD-RX
ELG051 ELG.003.051 MEDICARE-BENEFICIARY-IDENTIFIER ELG00003 VARIABLE-DEMOGRAPHICS-ELIGIBILITY