7ccb1ac7_coding___Ministry_of_Health_NZ__HIMAA_Course_Requirements
ACS 2001 External Cause Code Use and Sequencing ACS 0026 Admission for Clinical Trial, Drug Challenge or Therapeutic Drug Monitoring [New Zealand Convention (NZC)] Z03.6 Observation for suspected toxic effect from ingested substance requires the assignment of external causes to identify the specific substance. This is a mandatory requirement in New Zealand as specified in the NMDS Data Dictionary. [HIMAA Course Requirements] 
External cause, place of occurrence and activity codes are not required in addition to the ICD-10-AM code Z03.6 for HIMAA assessments and examinations. However, they will be marked as an optional code for NZ students if included in assessments and examinations.
Courses on clinical coding | Ministry of Health NZ
HIMAA Course Requirements