| Code | URI | Type | Description |
| Specializes | | Coding | The child code is a more narrow version of the concept represented by the parent code. I.e. Every child concept is also a valid parent concept. Used to allow determination of subsumption. Must be transitive, irreflexive, antisymmetric. |
| Generalizes | | Coding | Inverse of Specializes. Only included as a derived relationship. |
| internalId | http://terminology.hl7.org/CodeSystem/utg-concept-properties#v3-internal-id | code | The internal identifier for the concept in the HL7 Access database repository. |
| notSelectable | http://hl7.org/fhir/concept-properties#notSelectable | boolean | Indicates that the code is abstract - only intended to be used as a selector for other concepts |
| status | http://hl7.org/fhir/concept-properties#status | code | Designation of a concept's state. Normally is not populated unless the state is retired. |
| Lvl | Code | Display | Definition | internalId | Not Selectable | status |
| 1 | _ActSubstanceAdminSubstitutionCode | ActSubstanceAdminSubstitutionCode | Description: Substitution occurred or is permitted with another product that may potentially have different ingredients, but having the same biological and therapeutic effects. \n | 21284 | true | active |
| 2 | E | equivalent | Description: Substitution occurred or is permitted with another bioequivalent and therapeutically equivalent product. \n | 23107 | | active |
| 3 | EC | equivalent composition | Description: \n Substitution occurred or is permitted with another product that is a: \n \n- pharmaceutical alternative containing the same active ingredient but is formulated with different salt, ester
\n- pharmaceutical equivalent that has the same active ingredient, strength, dosage form and route of administration
\n \n Examples: \n \n- Pharmaceutical alternative: Erythromycin Ethylsuccinate for Erythromycin Stearate
\n- Pharmaceutical equivalent: Lisonpril for Zestril
\n \n | 23108 | | active |
| 4 | BC | brand composition | Description: \n Substitution occurred or is permitted between equivalent Brands but not Generics \n Examples: \n \n- Zestril for Prinivil
\n- Coumadin for Jantoven
\n \n | 23109 | | active |
| 4 | G | generic composition | Description: Substitution occurred or is permitted between equivalent Generics but not Brands \n Examples: \n \n- Lisnopril (Lupin Corp) for Lisnopril (Wockhardt Corp)
\n \n | 16623 | | active |
| 3 | TE | therapeutic alternative | Description: Substitution occurred or is permitted with another product having the same therapeutic objective and safety profile. \n Examples: \n \n- ranitidine for Tagamet
\n \n | 16624 | | active |
| 4 | TB | therapeutic brand | Description: Substitution occurred or is permitted between therapeutically equivalent Brands but not Generics \n \n \n Examples: \n \n | 23105 | | active |
| 4 | TG | therapeutic generic | Description: Substitution occurred or is permitted between therapeutically equivalent Generics but not Brands \n \n \n Examples: \n \n- Ranitidine for cimetidine
\n \n | 23106 | | active |
| 2 | F | formulary | Description: This substitution was performed or is permitted based on formulary guidelines. \n | 16625 | | active |
| 2 | N | none | No substitution occurred or is permitted. \n | 16622 | | active |