Montana Title 19. Public Retirement Systems § 19-6-601. Disability retirement benefit

(1) Except as provided in subsections (2) and (3), a vested member who becomes disabled must be granted a disability retirement benefit that is the actuarial equivalent of the service retirement benefit under 19-6-502 standing to the member's credit at the time of the member's disability retirement.

(2) Except as provided in subsections (1) and (3), a vested or nonvested member who becomes disabled as a direct result of the member's service in the line of duty:

(3) Upon the death of a member receiving a disability retirement benefit under this section, the member's surviving spouse or dependent child is eligible for benefits as provided in 19-6-505.