This case-sensitive code system http://terminology.hl7.org/CodeSystem/adverse-event-category defines the following codes:

CodeDisplayDefinition
wrong-patient Wrong PatientThe adverse event pertains to an event involving the wrong patient, who was not the intended subject.
procedure-mishap Procedure MishapThe adverse event pertains to a procedure mishap.
medication-mishap Medication MishapThe adverse event pertains to a medication mishap, such as wrong dose, route, rate, or duration of administration.
device DeviceThe adverse event pertains to a device.
unsafe-physical-environment Unsafe Physical EnvironmentThe adverse event pertains to an unsafe physical environment.
hospital-aquired-infection Hospital Acquired InfectionThe adverse event pertains to a hospital acquired infection.
wrong-body-site Wrong Body SiteThe adverse event pertains to the wrong body site.
<status value="draft"/> <experimental value="false"/> <date value="2020-04-09T21:10:28+00:00"/> <publisher value="Health Level Seven International"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org"/> </telecom> <telecom> <system value="email"/> <value value="hq@HL7.org"/> </telecom> </contact> <description value="Overall categorization of the event, e.g. product-related or situational."/> <copyright value="This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license"/> <caseSensitive value="true"/> <valueSet value="http://terminology.hl7.org/ValueSet/adverse-event-category"/> <content value="complete"/> <concept> <code value="wrong-patient"/> <display value="Wrong Patient"/> <definition value="The adverse event pertains to an event involving the wrong patient, who was not the intended subject."/> </concept> <concept> <code value="procedure-mishap"/> <display value="Procedure Mishap"/> <definition value="The adverse event pertains to a procedure mishap."/> </concept> <concept> <code value="medication-mishap"/> <display value="Medication Mishap"/> <definition value="The adverse event pertains to a medication mishap, such as wrong dose, route, rate, or duration of administration."/> </concept> <concept> <code value="device"/> <display value="Device"/> <definition value="The adverse event pertains to a device."/> </concept> <concept> <code value="unsafe-physical-environment"/> <display value="Unsafe Physical Environment"/> <definition value="The adverse event pertains to an unsafe physical environment."/> </concept> <concept> <code value="hospital-aquired-infection"/> <display value="Hospital Acquired Infection"/> <definition value="The adverse event pertains to a hospital acquired infection."/> </concept> <concept> <code value="wrong-body-site"/> <display value="Wrong Body Site"/> <definition value="The adverse event pertains to the wrong body site."/> </concept> </CodeSystem>