Iowa Code § 151.10: Education requirements.

A person who is an applicant for a license to practice chiropractic shall only be required to be tested for the adjunctive procedures specified in section 151.1, subsection 3, which the person chooses to utilize. A person licensed to practice chiropractic shall only be required to complete continuing education requirements for the adjunctive procedures specified in section 151.1, subsection 3, which the person chooses to utilize. A person who is an applicant for a license to practice chiropractic or a person licensed to practice chiropractic shall not be required to utilize any of the adjunctive procedures specified in section 151.1, subsection 3, to obtain a license or continue to practice chiropractic, respectively.