Which code system is primarily used for outpatient procedures?

The correct choice is CPT, which stands for Current Procedural Terminology. This coding system is specifically designed to provide a uniform language that accurately describes medical, surgical, and diagnostic services. This is especially relevant for outpatient procedures, where distinct and precise coding is essential for billing, reporting, and ensuring appropriate reimbursement from insurance companies.

CPT codes are extensively used in outpatient settings because they provide detailed descriptors for a wide range of services, including evaluations and management, procedures, and other services that are typically performed in an outpatient setting. These codes help healthcare providers communicate standardized information about patient care and ensure smooth processing of insurance claims.

While other coding systems like ICD-10-CM and HCPCS do play important roles in healthcare coding, they serve different primary purposes. ICD-10-CM is primarily used for diagnosis coding, and while HCPCS relates to services, it includes both outpatient and inpatient elements and is broader in scope. DRG, or Diagnosis-Related Group, is specifically used for inpatient hospital services, making it less relevant in the context of outpatient procedures. Thus, CPT is the most accurate choice for coding outpatient procedures.