Office Administrative Assistant Practice Exam 2025 - Free Office Administration Practice Questions and Study Guide

Level I procedure codes are most accurately represented by the CPT, or Current Procedural Terminology, coding system. This system is primarily used for billing and documenting medical procedures and services provided by healthcare professionals. CPT codes are numeric and allow healthcare providers to communicate common medical procedures, making them essential in the medical billing process.

The other coding systems mentioned serve different purposes: ICD-10 codes are used for diagnosing diseases and conditions, HCPCS (Healthcare Common Procedure Coding System) codes cover non-physician services such as ambulance services and prosthetic devices, and DRG (Diagnosis-Related Group) codes are intended for inpatient hospital services and are used for classification of hospital cases. Therefore, while these coding systems are important in healthcare administration, only CPT is classified specifically as Level I procedure codes.