This code system https://bluebutton.cms.gov/assets/ig/CodeSystem-dmerc-line-supplr-type-cd defines the following codes:
| Code | Display | Definition |
| 0 | Clinics, groups, associations, partnerships, or other entities for whom the carrier's own ID number has been assigned. | Clinics, groups, associations, partnerships, or other entities for whom the carrier's own ID number has been assigned. |
| 1 | Physicians or suppliers billing as solo practitioners for whom SSN's are shown in the physician ID code field. | Physicians or suppliers billing as solo practitioners for whom SSN's are shown in the physician ID code field. |
| 2 | Physicians or suppliers billing as solo practitioners for whom the carrier's own physician ID code is shown. | Physicians or suppliers billing as solo practitioners for whom the carrier's own physician ID code is shown. |
| 3 | Suppliers (other than sole proprietorship) for whom employer identification (EI) numbers are used in coding the ID field. | Suppliers (other than sole proprietorship) for whom employer identification (EI) numbers are used in coding the ID field. |
| 4 | Suppliers (other than sole proprietorship) for whom the carrier's own code has been shown. | Suppliers (other than sole proprietorship) for whom the carrier's own code has been shown. |
| 5 | Institutional providers and independent laboratories for whom employer identification (EI) numbers are used in coding the ID field. | Institutional providers and independent laboratories for whom employer identification (EI) numbers are used in coding the ID field. |
| 6 | Institutional providers and independent laboratories for whom the carrier's own ID number is shown. | Institutional providers and independent laboratories for whom the carrier's own ID number is shown. |
| 7 | Clinics, groups, associations, or partnerships for whom employer identification (EI) numbers are used in coding the ID field. | Clinics, groups, associations, or partnerships for whom employer identification (EI) numbers are used in coding the ID field. |
| 8 | Other entities for whom employer identification (EI) numbers are used in coding the ID field or proprietorship for whom EI numbers are used in coding the ID field. | Other entities for whom employer identification (EI) numbers are used in coding the ID field or proprietorship for whom EI numbers are used in coding the ID field. |
