Following a policy review, a new category was added in July 2017. Category C enables specified types of health professional to prescribe from a list of unapproved drugs that have an established role in the treatment of particular conditions. There are separate lists for drugs, biologicals and devices. Drugs that are not listed in category C are deemed to be higher risk and remain in category B. The TGA has developed an online tool to help prescribers decide which category is appropriate for their patients.