finding no implied agreement where carrier paid for two surgeries to cervical spine without any formal agreement that recognized a cervical spine injury, citing the earlier acceptance of a low back injury in the case and the testimony from the adjuster that the payment had been carelessly authorized

considering evidentiary rulings by an administrative board under an abuse of discretion standard

In Tenaglia-Evans, the Supreme Court held that, when an insurance adjuster, who carelessly approved every claim, authorized payment for claimant's surgery, such payment was solely a result of the "poor performance" of the insurance adjuster.