Michigan Compiled Laws, Chapter 500. Insurance Code of 1956 § 500.731

(a) For contract reserves for policies and certificates issued on or after the effective date of this chapter, the 1987 commissioners group disability income table (87 C.G.D.T.).

(b) For claim reserves for claims incurred prior to, on, or after the effective date of this chapter, the 1987 commissioners group disability income table (87 C.G.D.T.).