Chiropractic 24-Visit Limitation. Defendant was not entitled to reimbursement by lien claimant in excess of 24 chiropractic visits because (1) LC 4604.5(d)(1) does not authorize restitution for voluntary payment of excessive treatment and, although restitution is allowed in limited circumstances pertaining to medical-legal expenses under LC 4622 and 4625, these sections do not apply to medical treatment, (2) defendant knew of 24-visit limit yet continued to pay for excessive treatment, (3) defendant did not allege unjust enrichment, fraud, duress, or mistakes of law or fact, and (4) principle of transactional stability applied because lien claimant continued to provide treatment based upon defendant's payments. See Mora panel decision.