CENTER VALLEY, Pa., July 7, 2020 /PRNewswire/ — Aesculap Implant Systems, LLC today announced that National Imaging Associates (NIA), a Magellan Health Company, has updated its “Clinical Guidelines for Medical Necessity for Musculoskeletal and Surgery” to include a medical necessity recommendation for Lumbar Total Disc Replacement (TDR), including the latest generation activL® Artificial Disc. Multiple U.S. commercial payers …