If a health maintenance organization requires its subscribers to have a referral to receive consultation services in writing, the health maintenance organization shall use the uniform consultation referral form adopted by the Commissioner under § 15-120 of the Insurance Article as the sole instrument for referrals for consultation services. A health maintenance organization may not impose as a condition of coverage any requirement to: Modify the uniform consultation referral form; or Submit additional consultation referral forms. The uniform consultation referral form shall be properly completed by the health care provider referring the subscriber for consultation services.