5.10. An occupational therapist who advertises professional fees or prices must do so in a manner easily understandable by persons without special knowledge of occupational therapy or the professional services covered by the advertisement and must:(1) maintain them in force for the period mentioned in the advertisement, which may not be less than 90 days after the last authorized broadcast or publication;
(2) specify the services included in those fees or prices;
(3) indicate whether expenses are included or not;
(4) indicate whether additional services not included in those fees might be required.
However, an occupational therapist may agree with his client on an amount lower than the one advertised.