| Directory | Messages | Segments | Composites | Data elements | Codes |
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| Used in | |||
| MEDPRE | 480 | SG3\SG7 | Medical prescription message |
| MEDREQ | 220 | SG2 | Medical service request message |
| MEDRPT | 350 | SG2\SG4 | Medical service report message |
| MEDRUC | 760 | SG7\SG11 | Medical resource usage and cost message |
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