Maryland Code, Insurance § 10-502

(1) require an insurer to pay an amount for motor vehicle repair services or repair products necessary to properly and fairly repair a motor vehicle that is greater than the usual and customary charges for equivalent services or products charged by similar contractors or repair shops within a reasonable geographic or trade area of the address of the claimant or insured; or

(2) prohibit an insurer from requiring a claimant or an insured to obtain an appraisal by driving a damaged motor vehicle to a facility that is owned or leased by or under contract to the insurer and is used exclusively for damage appraisals.