Thirsk v. State Fund [5/11/99] 1999 MTWCC 34 Claimant sought compensation for 56 chiropractic adjustments over 9 month period, all incurred after insurer informed him it would no longer cover chiropractic treatment for him. Persuasive medical evidence, along with statements made by claimant, indicated claimant had reached maximum medical healing and the chiropractic treatments were maintenance treatments, not actually leading to improvement in claimant. WCC held that under section 39-71-704, MCA (1993), the insurer was responsible for primary and secondary medical services as defined in the statute. Under the circumstances of this case, the chiropractic treatments were not primary medical services. The insurer was liable for secondary medical services only upon a clear demonstration of cost effectiveness of the services in returning the injured worker to actual employment. Claimant did not make this demonstration. Indeed, the evidence showed the treatments provided no more than temporary relief and did not improve his condition.