Psoriasis - severe chronic plaque psoriasis

The PBS subsidises biological medicines for patients with severe chronic plaque psoriasis.

Patient eligibility

The Pharmaceutical Benefits Scheme (PBS) subsidises treatment with biological medicines under the National Health Act 1953, section 85 and section 100 for patients with severe chronic plaque psoriasis.

Where the term biological medicine appears, it refers to:

  • adalimumab
  • bimekizumab
  • etanercept
  • guselkumab
  • infliximab
  • ixekizumab
  • risankizumab
  • secukinumab
  • tildrakizumab
  • ustekinumab.

Patients must be eligible for the PBS and meet the relevant restriction criteria.

The Schedule of Pharmaceutical Benefits on the PBS website outlines the restrictions for prescribing biological medicines.

Section 100 arrangements

Infliximab i.v.

This item is only PBS-subsidised for non-admitted patients, day admitted patients, or patients on discharge who are attending either:

  • an approved private hospital
  • a public hospital.

This item isn’t PBS-subsidised for public hospital in-patients. You must include the hospital name and provider number on the authority application form.

Treatment specifics

To be eligible for PBS-subsidised treatment with biological medicines, patients must be treated by a dermatologist.

PASI calculation forms

PASI calculation and body diagram - whole body form

PASI calculation and body diagram - face, hand and foot form

Authority applications

Patients 18 years of age or older

Applying for initial treatment

Please note: You don’t need to complete this application in writing when you request PBS authority online.

Applications for initial authority approval to prescribe PBS-subsidised biological medicines to treat severe chronic plaque psoriasis can be made:

All written applications must include:

Applying for change or recommencement of treatment

Please note: You don’t need to complete this application in writing when you request PBS authority online.

Applications to change or recommence authority approval to prescribe PBS-subsidised biological medicines to treat adult patients with severe chronic plaque psoriasis can be made:

All written applications must include:

Applying for continuing treatment

Please note: You’ll get an immediate assessment when you request PBS authorities online.

Applications for continuing authority approval to prescribe PBS-subsidised biological medicines to treat adult patients with severe chronic plaque psoriasis can be made in:

All written applications must include:

After we approve the first application for continuing treatment, subsequent continuing treatments with PBS-subsidised biosimilar brands of biological medicines are Authority Required (Streamlined). You don’t need authority approval from us for the listed quantity and repeats.

Patients under 18 years

Adalimumab and ustekinumab

Applying for initial, change or recommencement of treatment

Please note: You don’t need to complete this application in writing when you request PBS authority online.

Applications for initial, change or recommencement authority approval to prescribe PBS-subsidised adalimumab or ustekinumab to treat patients under 18 years with severe chronic plaque psoriasis can be made:

All written applications must include:

Applying for continuing treatment

Please note: You’ll get an immediate assessment when you request PBS authorities online.

Applications for continuing authority approval to prescribe PBS-subsidised adalimumab or ustekinumab to treat patients under 18 years with severe chronic plaque psoriasis can be made in:

All written applications must include:

After we approve the first application for continuing treatment, subsequent continuing treatments with PBS-subsidised adalimumab or biosimilar brand of ustekinumab are Authority Required (Streamlined). You don’t need authority approval from us for the listed quantity and repeats.

Etanercept

Applications for initial, change, recommencement, or re-treatment authority approval to prescribe PBS-subsidised etanercept to treat patients under 18 years with severe chronic plaque psoriasis can be made either:

Completion of the course of PBS-subsidised treatment with etanercept is Authority Required (Streamlined). You don’t need authority approval from us for the listed quantities and repeats.

More information

Call the PBS Complex Drugs Programs enquiry line for more information.

Page last updated: 1 September 2025.
QC 32836