CMS has revised the language in Manual 100-3 § 20.10. You can read the entire memo here.

As of of June 21, 2006, you can now submit bills for Cardiac Rehabilitation services to CMS. The "MLN Matters" artlcle (MM4401) addressing this is now available on the CMS Website or through your facility's billing office. As the decision was effective 03/22/06, any services performed after that date will be covered. There is an allowable billable period of 18 months after services are performed.