Certified Outpatient Coding (COC) Certification Exam

Certified Outpatient Coding (COC) Outpatient coding spans emergency department visits, ambulatory surgery center procedures, and office-based encounters—each with distinct documentation rules and modifier requirements. The COC exam explores diagnosis coding across ICD-10-CM, procedure coding via CPT and HCPCS, and compliance nuances tied to the outpatient prospective payment system. Accuracy in these settings directly influences claim denials and revenue cycle performance.