304Mental and behavioural disorders due to psychoactive substance use (e.g, alcohol, opioids, cannabinoids, nicotine, cocaine, hallucinogens, sedative/hypnotics, stimulants not including caffeine, etc)
Mental and Behavioural Disorders
What this reference tells you
304 is an Ontario diagnostic code describing “Mental and behavioural disorders due to psychoactive substance use (e.g, alcohol, opioids, cannabinoids, nicotine, cocaine, hallucinogens, sedative/hypnotics, stimulants not including caffeine, etc).” It supports the diagnosis field of a claim and is distinct from the fee code identifying the service.
Before using this code
Confirm the current Ministry publication, the patient and provider context, the date of service, and documentation supporting the claim. A searchable reference does not establish eligibility or guarantee payment.