Section 609.05 - Primary provider and referrals(1) Except as provided in subs. (2) and (3), a limited service health organization, preferred provider plan, or defined network plan shall permit its enrollees to choose freely among participating providers.(2) Subject to s. 609.22(4) and (4m), a limited service health organization, preferred provider plan, or defined network plan may require an enrollee to designate a primary provider and to obtain health care services from the primary provider when reasonably possible.(3) Except as provided in ss. 609.22(4m), 609.65, and 609.655, a limited service health organization, preferred provider plan, or defined network plan may require an enrollee to obtain a referral from the primary provider designated under sub. (2) to another participating provider prior to obtaining health care services from that participating provider.1985 a. 29; 1987 a. 366; 1989 a. 121; 1997 a. 237; 1999 a. 9; 2001 a. 16.