http://terminology.hl7.org/CodeSystem/v3-ActReason|3.1.0

ActReason

A set of codes specifying the motivation, cause, or rationale of an Act, when such rationale is not reasonably represented as an ActRelationship of type \"has reason\" linking to another Act.\r\n\r\n*Examples:* Example reasons that might qualify for being coded in this field might be: \"routine requirement\", \"infectious disease reporting requirement\", \"on patient request\", \"required by law\".