这个词是什么意思？
A decision by a health insurer or plan that a health care service, treatment plan, prescription drug or durable medical equipment is medically necessary.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000078482 · MeSH 2026。
Courtesy of the U.S. National Library of Medicine. Annual snapshot; later updates may not be reflected. NLM does not endorse this service.