About the calculator
CDAI scores should be calculated independantly by a qualified gastroenterologist. This page calculates Adult CDAI scores as defined by Medicare Australia for information only. This score determines eligibility for restricted drugs, including 'biologics.' Please note that there are several forms of the CDAI, and while this is the one most frequently used in Australia, it may not be consistent with other standards or calculators.
- Enter whole positive numbers only (eg. 1 not 1.3). If unsure of a number, leave it out and add it later: the calculator will still give a partial result.
- The Haematocrit (Hct) or Packed Cell Volume (PCV) number used in section G would have been provided after a recent blood test.
- This is normally included in the haematology section of a "Complete Blood Picture" or "Full Blood Exam" report or similar.