# Class Concepts Acts are classified into one of these four types based upon their ClassConcept code. This dictates what type of Act the particular tuple in the database represents. | Act Class | Code | Description | | ------------------------ | ------ | ------------------------------------------------------------------------------------------------------ | | Observation | OBS | Indicates that the act represents a value which was observed. | | Substance Administration | SBADM | Indicates that the act represents the administration of a substance to an entity. | | Patient Encounter | ENC | The act represents an encounter between one or more providers of care and one or more clients of care. | | Registration | REG | The act represents a registration whereby new data was collected about an entity. | | Account Management | ACCM | The act represents the management (adjustment) of an account. | | Supply | SPLY | The act represents the supply of one or more materials to/from one or more entities. | | Condition | COND | The act represents a chronic or recurring problem or health condition. | | Procedure | PROC | The act represents a clinical procedure which was performed on the client of care. | | Battery | BAT | The act represents a series of procedures, observations, administrations, etc. | | Transport | TRANS | The act represents the physical transporting of materials to/from one or more entities. | | Account | ACCT | The act represents an active account (financial, stock, etc.) on which transactions can be performed. | | Financial Transaction | FTRANS | The act represents a financial transaction where monies are exchanged between one or more entities. | | Invoice Element | INVE | The act represents a sub-element of a financial transaction. | The class concept list is extensible. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.santesuite.org/santedb/data-and-information-architecture/conceptual-data-model/acts/class-concepts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.