Final answer:
The reference procedural code book that uses a numbering system developed by the AMA is called the CPT (Current Procedural Terminology).
Step-by-step explanation:
The reference procedural code book that uses a numbering system developed by the AMA is called the CPT (Current Procedural Terminology).
The CPT code book is published by the American Medical Association (AMA) and is widely used in medical billing and coding to describe medical procedures and services.
The CPT coding system consists of five-digit codes that represent different healthcare procedures, such as surgeries, diagnostic tests, and medical treatments.