Within thirty days after receiving a properly submitted bill for medical payments, the employer shall: (1) Pay the charge or any portion of the bill that is not denied; (2) Deny all or a portion of the bill on the basis that the injury is not compensable, or the service or charge is excessive or not medically necessary; or (3) Request additional information to determine whether the charge or service is excessive or not medically necessary or whether the injury is compensable. Source: SL 2008, ch 279 , § 1.