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COC practice questions - frequently asked questions

Plain answers about how COC Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real COC exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The COC exam spans 10 domains: Medical Terminology (7% of the exam); Anatomy (7% of the exam); Coding Guidelines (3% of the exam); Payment Methodologies (13% of the exam); Compliance (3% of the exam); ICD-10-CM (15% of the exam); HCPCS Level II (7% of the exam); CPT (13% of the exam); Surgery and Modifiers (22% of the exam); Cases (10% of the exam). Every practice question on this site is tagged to one of these domains.

The domains are not weighted equally on the exam. By share of the marks: Surgery and Modifiers 22%; ICD-10-CM 15%; Payment Methodologies 13%; CPT 13%; Cases 10%; Medical Terminology 7%; Anatomy 7%; HCPCS Level II 7%; Coding Guidelines 3%; Compliance 3%.

The COC exam has 100 questions and is completed in 4 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

Certified Outpatient Coder (COC) is a professional certification covering Medical Terminology (7%), Anatomy (7%), Coding Guidelines (3%), Payment Methodologies (13%), and more. This site has a full timed practice-question bank to help you prepare and pass.

To earn the COC you pass its certification exam, which covers Medical Terminology (7%), Anatomy (7%), Coding Guidelines (3%), Payment Methodologies (13%), and more, then maintain the credential per the issuing body's rules. Consistent timed practice across every domain, reviewing what you miss, is the most dependable preparation — start with the free questions above.

COC stands for Certified Outpatient Coder. This site offers a full timed practice-question bank to prepare for the exam.

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