Legal Bill Review | Cost of Legal Bill Review & Audit Services - LSG. How LSG implements legal bill review LSG is one of the leading legal fee auditors servicing customers within insurance, corporate legal and beyond. To implement legal bill review and legal bill audit into an organization, LSG activates a legal spend management software and human in-house legal fee auditor hybrid. We work to control your legal spend across property & casualty, workers compensation and medical claims. Our best practices for legal bill review and legal fee auditing are based on almost two decades in the claims, matter and outside counsel vendor management industry, saving Fortune 500 clients over a billion dollars in overbilled attorney fees and spend with legal bill audit and ELM software, our flagship legal spend management solutions. Our legal bill review and legal fee auditing service can be used to review submitted invoices on clients’ pre-existing systems, or on our enterprise legal management software for ongoing litigation and/or for closed cases or matters.