| MH {RImmPort} | R Documentation |
| Variable Name | Variable Label |
| STUDYID | Study Identifier |
| DOMAIN | Domain Abbreviation |
| USUBJID | Unique Subject Identifier |
| MHSEQ | Sequence Number |
| MHTERM | Reported Term for the Medical History |
| MHCAT | Category for Medical History |
| MHBODSYS | Body System or Organ Class |
| MHDY | Study Day of History Collection |