3 Colo. Code Regs. § 702-3-1-15-3
This regulation applies to all licensed companies conducting business in the State of Colorado, as defined in Section 4, who issue any line of health coverage including, but not limited to, major medical, long-term care, and disability insurance. Each company is required to establish a Premium Deficiency Reserve, when necessary, on each financial statement submitted to the Colorado Division of Insurance. The Premium Deficiency Reserve is in addition to claim and contract reserves, rate stabilization reserves, retroactive premium liabilities, provider reserves, provider withhold or bonus pool reserves, and other reserves not held to specifically make future benefit payments. A reserve similar to the Premium Deficiency Reserve may also be necessary for other types of contractual arrangements, such as administrative services agreements, or any other health benefit contracts in which the administrative fees or compensation received are not sufficient to cover the expenses for the remainder of the deficiency period. This reserve should be calculated using the procedures outlined in this regulation.
3 CCR 702-3-1-15-3