- National reserve military medical associations or their equivalents from all NATO member countries can become full members.
- National reserve military medical associations or their equivalents from non-NATO member countries can become associate members (PfP countries, countries of the Mediterranean Dialogue etc.).
- Only one national association per country will be admitted.
- Each member of CIOMR may send a delegation consisting of 6 members, one of them must be a medical officer.
- Application for membership should be made to the Executive Committee.