| 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 |