| obxm_id | int(11) | NO | | PRI | auto_increment | |
| obxm_cus_id | int(11) | YES | | MUL | | |
| obxm_cli_id | int(11) | YES | | MUL | | |
| obxm_loinc_num | varchar(20) | YES | | MUL | | |
| obxm_code | varchar(20) | YES | | | | CPT, LOINC, or SNOMED code |
| obxm_cs_id | int(11) | NO | | | | Code System ID to associate type of code |
| obxm_unit | varchar(45) | YES | | | | |
| obxm_range | text | YES | | | | |
| obxm_range_low | varchar(10) | YES | | | | |
| obxm_range_high | varchar(10) | YES | | | | |
| obxm_data_value_type | varchar(2) | YES | | | | |
| obxm_modified | datetime | YES | CURRENT_TIMESTAMP | | on update CURRENT_TIMESTAMP | |
| obxm_created | datetime | YES | CURRENT_TIMESTAMP | | | |