| Code | Description | Deutsch (German) | Nederlands (Dutch) | Comment | Version | 
| CDM | Charge description master file | Leistungskatalog | Tariefomschrijving masterbestand |  | added v2.2 | 
| CLN | Clinic master file |  | Kliniek masterbestand |  | added v2.4 | 
| CM0 | Clinical study master |  | Klinisch onderzoek masterbestand | deprecated | added v2.3, removed after v2.3 | 
| CM1 | Clinical study phase master |  | Klinisch onderzoeksfases masterbestand | deprecated | added v2.3, removed after v2.3 | 
| CM2 | Clinical study Data Schedule Master |  | Klinisch onderzoek gegevensschema masterbestand | deprecated | added v2.3, removed after v2.3 | 
| CMA | Clinical study with phases and scheduled master file |  | Klinisch onderzoek met fases en schema masterbestand |  | added v2.3.1 | 
| CMB | Clinical study without phases but with scheduled master file |  | Klinisch onderzoek zonder fases maar met schema masterbestand |  | added v2.3.1 | 
| INV | Inventory master file |  | Voorraad masterbestand |  | added v2.5 | 
| LOC | Location master file |  | Locatie masterbestand |  | added v2.3 | 
| MACP | Medicare Approved Coverage Process |  | Medicare goedgekeurde dekking proces | This identifies Universal Service Identifier that are approved for an ICD based on the CPT. | added v2.8.2 | 
| MLCP | Medicare Limited Coverage Process |  | Medicare beperkte dekking proces | This identifies Universal Service Identifiers that are not approved for a CPT code based on an ICD. | added v2.8.2 | 
| OM1 | Observation text master file segments (e.g. Lab) |  | Observatietekst masterbestand-segmenten (d.w.z. Lab) | deprecated | added v2.2, removed after v2.3 | 
| OM1-OM6 | Observation text master file segments (e.g. Lab) |  | Observatietekst masterbestand-segmenten (d.w.z. Lab) | deprecated | added v2.3, removed after v2.3 | 
| OM2 | Observation text master file segments (e.g. Lab) |  | Observatietekst masterbestand-segmenten (d.w.z. Lab) | deprecated | added v2.2, removed after v2.3 | 
| OM3 | Observation text master file segments (e.g. Lab) |  | Observatietekst masterbestand-segmenten (d.w.z. Lab) | deprecated | added v2.2, removed after v2.3 | 
| OM4 | Observation text master file segments (e.g. Lab) |  | Observatietekst masterbestand-segmenten (d.w.z. Lab) | deprecated | added v2.2, removed after v2.3 | 
| OM5 | Observation text master file segments (e.g. Lab) |  | Observatietekst masterbestand-segmenten (d.w.z. Lab) | deprecated | added v2.2, removed after v2.3 | 
| OM6 | Observation text master file segments (e.g. Lab) |  | Observatietekst masterbestand-segmenten (d.w.z. Lab) | deprecated | added v2.2, removed after v2.3 | 
| OMA | Numerical observation master file |  | Numeriek observaties masterbestand |  | added v2.3.1 | 
| OMB | Categorical observation master file |  | Categorische observaties masterbestand |  | added v2.3.1 | 
| OMC | Observation batteries master file |  | Observatie-betteries masterbestand |  | added v2.3.1 | 
| OMD | Calculated observations master file |  | Berekende observaties masterbestand |  | added v2.3.1 | 
| OME | Other Observation/Service Item master file |  | Andere observatie/service items masterbestand |  | added v2.4 | 
| OMM | Mixed type observation master file |  | Gemengd type observatie masterbestand |  | added v2.8.2 | 
| PRA | Practitioner master file | Ärztekatalog | Zorgverleners masterbestand |  | added v2.2 | 
| STF | Staff master file | Mitarbeiterkatalog | Medewerkers masterbestand |  | added v2.2 |