Final answer:
CPT codes were incorporated as Level 1 codes into HCPCS in 1983.
Step-by-step explanation:
The answer to your question is A) 1983. In 1983, the Current Procedural Terminology (CPT) codes were incorporated as Level 1 codes into the Healthcare Procedure Coding System (HCPCS). These codes are used to describe medical procedures and services provided by healthcare professionals. These codes help in standardizing the reporting of medical procedures and services for billing and reimbursement purposes.