From CMS:
On Saturday, September 29, 2007, President Bush signed the “Extenders Law,” delaying the implementation date for all paper Medicaid prescriptions to be written on tamper-resistant paper. Under the new law, as of April 1, 2008, all written Medicaid prescriptions must be on tamper-resistant prescription pads.
CMS’ guidance on the tamper-resistant law, set forth in an August 17, 2007 State Medicaid Director letter, contains two phases. For the first, a prescription must contain at least one of the three tamper-resistant characteristics in order to be considered “tamper resistant.” For the second, prescriptions must contain all three characteristics.
The two-phased approach is still in effect. At least one of the three tamper-resistant characteristics is required on April 1, 2008. All three characteristics are required on October 1, 2008.