Final answer:
Category I Current Procedural Terminology (CPT) codes, used for medical billing, consist of five digits.
Step-by-step explanation:
Category I Current Procedural Terminology (CPT) codes are a critical part of medical billing and coding. These codes have five digits. These codes are used to standardize medical procedures for billing purposes and they are key to ensuring proper insurance reimbursement.
For example, if a physician performs a specific surgical procedure, a five-digit CPT code is used to represent that service on the insurance claim form. This allows the insurance company to understand what service was performed and ensure that the healthcare provider is reimbursed correctly.