| 2.03 | 06/11/2020 | Final version 2.03 (to have effect from 1 July 2021) Updated METeOR references for Mental Health Legal Status, State/ Territory Identifier to be consistent with the MH NMDS. | 
| 2.02 | 22/03/2019 | Final version 2.02 (to have effect 1 July 2019). | 
| 2.02 (Draft) | 22/3/19 | Draft version endorsed by the MHISSC incorporating ICD-10-AM 11th Edition domain values for principal and additional diagnoses and updating METeOR data element references. | 
| 2.01 | 29/05/2018 | Final version 2.01 (to have effect as of 1 July 2017). | 
| 2.01 (Draft) | 23/3/18 | Draft version endorsed by the MHISSC incorporating ICD-10-AM 10th Edition domain values for principal and additional diagnoses. | 
| 2.00 | 17/07/2017 | Final version 2.0 (to have effect as of 1 July 2017). | 
| 2.00 (Draft) | 24/3/17 | Draft version for consideration by the MHISSC incorporating removal of Focus of Care and addition of Phase of Care. | 
| 1.90 | 21/04/2016 | Final version 1.90 (to have effect on a best efforts basis as of 1 July 2015). | 
| 1.90 (Draft) | 18/3/16 | New data elements (County of Birth; Indigenous Status & Area of Usual Residence) for the Collection Occasions Details Record endorsed by the MHISSC. | 
| 1.80 | 15/02/2016 | Pagination issue in main document corrected. | 
| 1.80 | 29/05/2015 | Final version 1.80 (to have effect on a best efforts basis as of 1 July 2015). | 
| 1.80 (Draft) | 20/2/15 | Draft version for consideration by the MHISSC incorporating changes to the collection of (i) consumer-self report for Adults & Older Persons in inpatient settings and; (ii) clinician and consumer rated measures at discharge from ambulatory episodes. | 
| 1.70 | 11/11/2013 | Final version 1.70 (to have effect as of 1 July 2013). | 
| 1.70 (Draft) | 17/10/13 | Draft for in principle endorsement by MHISS. | 
| 1.70 (Draft) | 30/9/13 | Changes to requirement for HoNOS/CA/65+ discharge ratings from inpatient service settings. | 
| 1.62 | 6/6/13 | ASGC replaced with ASGS endorsed by the MHISS. | 
| 1.61 | 7/6/12 | Changes to domain values for Target Population endorsed by the MHISS. | 
| 1.60 (Final) | 13/02/2009 | Version endorsed by MHISS (to have effect as of 1 July 2009). | 
| 1.60 (Draft 4) | 13/2/09 | Final specifications submitted to MHISS for endorsement. | 
| 1.60 (Draft 3) | 18/8/08 | Draft for in principle endorsement by MHISS. | 
| 1.60 (Draft 2) | 8/8/08 | Amended draft for review by Technical Specifications Drafting Group. | 
| 1.60 (Draft 1) | 24/7/08 | Initial draft for review by Technical Specifications Drafting Group. | 
| 1.50 | 01/12/2003 | Final version 1.5 (to have effect as of 1 July 2003). | 
| 1.50 (Draft 3) | 27/10/03 | Draft revised following comment on Draft 2 and provided for ‘sign off’ by the National Mental Health Working Group. | 
| 1.50 (Draft 2) | 15/9/03 | Distributed to States and Territories for internal consultation and comment. | 
| 1.50 (Draft 1) | 24/7/03 | Initial draft distributed to Drafting Group. | 
| 1.00 | 30/08/2002 | Final version 1.0 (to have effect as of 1 July 2000). | 
| 1.00 (Final pre-publication) | 1/6/02 | Final pre-publication version produced for National Mental Health Outcomes Trainers’ Forum. | 
| 1.00 (Draft 3) | 18/2/02 | Draft revised following comment on Draft 2 and provided for ‘sign off’ by States and Territories. | 
| 1.00 (Draft 2) | 10/10/01 | Distributed to States and Territories for internal consultation and comment. | 
| 1.00 (Draft 1) | 16/9/01 | Initial draft distributed to Drafting Group; amended following comment by site coordinators and substantial new content added to incomplete sections. |