MO Rev Stat § 376.685 (2021)
2021 Missouri Revised Statutes|Title XXIV - Business and Financial Institutions|Chapter 376 - Life, Health and Accident Insurance|Section 376.685 - Optometrists, health insurance plans not to limit fees charged unless reimbursed by plan — requirements — definitions.

Effective - 28 Aug 2016   376.685. Optometrists, health insurance plans not to limit fees charged unless reimbursed by plan — requirements — definitions. — 1. No agreement between a health carrier or other insurer that writes vision insurance and an optometrist for the provision of vision services on a preferred or in-network basis to plan members or insurance subscribers in connection with coverage under a stand-alone vision plan, medical plan, health benefit plan, or health insurance policy shall require that an optometrist provide optometric or ophthalmic services or materials at a fee limited or set by the plan or health carrier unless the services or materials are reimbursed as covered services under the contract.  2. No provider shall charge more for services or materials that are not covered under a health benefit or vision plan than his or her usual and customary rate for those services or materials.  3. Reimbursement paid by the health benefit or vision plan for covered services or materials shall be reasonable and shall not provide nominal reimbursement in order to claim that services or materials are covered services. No health carrier shall provide de minimis reimbursement or coverage in an effort to avoid the requirements of this section.  4. No vision care insurance policy or vision care discount plan that provides covered services for materials shall have the effect, directly or indirectly, of limiting the choice of sources and suppliers of materials by a patient of a vision care provider.  5. Notwithstanding any other provisions in this section, nothing shall prohibit an optometrist from contractually opting in to an optometric services discount plan sponsored by a stand-alone vision plan, medical plan, health benefit plan, or health insurance policy.  6. For the purposes of this section, the following terms shall mean:  (1) "Covered services", optometric or ophthalmic services or materials for which reimbursement from the health benefit or vision plan is provided for by an enrollee's plan contract, or for which a reimbursement would be available but for the application of the enrollee's contractual limitations of deductibles, copayments, coinsurance, waiting periods, annual or lifetime maximums, alternative benefit payments, or frequency limitations;  (2) "Health benefit plan", the same meaning as such term is defined in section 376.1350;  (3) "Health carrier", the same meaning as such term is defined in section 376.1350;  (4) "Materials", includes, but is not limited to, lenses, frames, devices containing lenses, prisms, lens treatment and coatings, contact lenses, orthoptics, vision training devices, and prosthetic devices to correct, relieve, or treat defects or abnormal conditions of the human eye or its adnexa;  (5) "Optometric services", any services within the scope of optometric practice under chapter 336;  (6) "Vision plan", any policy, contract of insurance, or discount plan issued by a health carrier, health benefit plan, or company which provides coverage or a discount for optometric or ophthalmic services or materials. ­­-------- (L. 2016 H.B. 1682)