I want to clarify the length of time a provider can refer to the same history form. I have many providers that state it was reviewed see past history,PFSH, Meds and ect.. I was looking and that last scanned history form was 1980. I know that they need to review and sign but how long can they really refer to a history form????? I was under the impression that it was 1 year but also was told 3 years.