Group I

Life-threatening conditions for which treatment is possible but might fail, e.g. cancer.

Group II

Conditions where there may be long periods of intensive treatment aimed at prolonging life, but premature death is still possible, e.g. muscular dystrophy.

Group III

Progressive conditions without curative treatment options where treatment is exclusively palliative and may extend over many years, e.g. Batten’s disease.

Group IV

Conditions with severe neurological disability, which may cause weakness and susceptibility to health complications. Patients may deteriorate unpredictably but conditions are not considered to be progressive, e.g. severe cerebral palsy.