Australian Government: Australian Institute of Health and Welfare METeOR Home Page

Episode of care—principal diagnosis, code (ICD-10-AM 3rd edn) ANN{.N[N]}

Identifying and definitional attributes

Metadata item type:Help on this termData Element
Short name:Help on this termPrincipal diagnosis
METeOR identifier:Help on this term270187
Registration status:Help on this termHealth, Superseded 28/06/2004
Definition:Help on this termThe diagnosis established after study to be chiefly responsible for occasioning an episode of admitted patient care, an episode of residential care or an attendance at the health care establishment, as represented by a code.
Data Element Concept:Episode of care—principal diagnosis

Value domain attributes

Representational attributes

Classification scheme:International Statistical Classification of Diseases and Related Health Problems, Tenth Revision, Australian Modification 3rd edition
Representation class:Help on this termCode
Data type:Help on this termString
Format:Help on this termANN{.N[N]}
Maximum character length:Help on this term6

Data element attributes

Collection and usage attributes

Guide for use:Help on this term

The principal diagnosis must be determined in accordance with the Australian Coding Standards. Each episode of admitted patient care must have a principal diagnosis and may have additional diagnoses. The diagnosis can include a disease, condition, injury, poisoning, sign, symptom, abnormal finding, complaint, or other factor influencing health status.

As a minimum requirement the Principal diagnosis code must be a valid code from the current edition of ICD-10-AM.

For episodes of admitted patient care, some diagnosis codes are too imprecise or inappropriate to be acceptable as a principal diagnosis and will group to 951Z, 955Z and 956Z in the Australian Refined Diagnosis Related Groups, Version 4.

Diagnosis codes starting with a V, W, X or Y, describing the circumstances that cause an injury, rather than the nature of the injury, cannot be used as principal diagnosis. Diagnosis codes which are morphology codes cannot be used as principal diagnosis.

Collection methods:Help on this term

A principal diagnosis should be recorded and coded upon separation, for each episode of patient care. The principal diagnosis is derived from and must be substantiated by clinical documentation.

Comments:Help on this termThe principal diagnosis is one of the most valuable health data elements. It is used for epidemiological research, casemix studies and planning purposes.

Source and reference attributes

Origin:Help on this term

Health Data Standards Committee

National Centre for Classification in Health

National Data Standard for Injury Surveillance Advisory Group

Reference documents:Help on this termBramley M, Peasley K, Langtree L and Innes K 2002. The ICD-10-AM Mental Health Manual: an integrated classification and diagnostic tool for community-based mental health services. Sydney: National Centre for Classification in Health, University of Sydney

Relational attributes

Related metadata references:Help on this term

Is used in the formation of Episode of admitted patient care—diagnosis related group, code (AR-DRG v5.1) ANNA Health, Superseded 22/12/2009

Has been superseded by Episode of care—principal diagnosis, code (ICD-10-AM 4th edn) ANN{.N[N]} Health, Superseded 07/12/2005

Supersedes Principal diagnosis, version 4, DE, NHDD, NHIMG, Superseded 01/03/2005.pdf (19.3 KB)

Implementation in Data Set Specifications:Help on this term
All attributes +

Admitted patient care NMDS Health, Superseded 07/12/2005

DSS specific attributes +

Admitted patient mental health care NMDS Health, Superseded 07/12/2005

DSS specific attributes +

Admitted patient palliative care NMDS Health, Superseded 07/12/2005

DSS specific attributes +

Community mental health care NMDS 2004-05 Health, Superseded 08/12/2004

DSS specific attributes +

Community mental health care NMDS 2005-06 Health, Superseded 07/12/2005

DSS specific attributes +

Residential mental health care NMDS 2005-06 Health, Superseded 07/12/2005

DSS specific attributes +
My items Help on this term
Download Help on this term