MCBC Medical Coding Study Guide (2026) – 150 Questions on ICD-10, CPT, HCPCS & Billing Rules

This document contains approximately 150 exam-style questions with verified answers for the Medical Coding and Billing Certification (MCBC) Study Guide 2026 . It provides a detailed and structured review of essential coding systems, healthcare documentation, and billing procedures required for certification success. As shown on page 1, the document begins with foundational coding principles such as understanding medical necessity for accurate diagnosis code assignment. Early sections (pages 2–3) cover key coding systems including ICD-10-CM structure (code blocks, specificity rules), CPT coding updates (e.g., revised code indicators), and HCPCS usage for reporting services and supplies. The middle sections (pages 3–6) focus on practical billing processes such as CMS-1500 claim form completion, coordination of benefits, upcoding risks, and the role of encounter forms in accurate documentation. It also includes essential healthcare systems like EHR, EMR, and PHR, along with care settings such as ambulatory and acute care. Later sections (pages 6–8) expand into coding workflows (6-step diagnosis coding process), compliance guidelines, ICD-10 conventions (e.g., sequela coding, NEC usage), and common billing errors such as outdated codes and improper reimbursement practices. The document integrates both theoretical knowledge and real-world application, helping learners understand not only how to code correctly but also how to ensure compliance with healthcare regulations. Its structured Q&A format supports efficient revision, improves coding accuracy, and builds confidence for certification exams. This document is ideal for: Medical Coding and Billing Certification (MCBC) candidates Health Information Management (HIM) students Medical billing specialists and coding professionals Nursing and allied health students learning coding and documentation The content aligns closely with core references such as the ICD-10-CM Official Guidelines for Coding and Reporting, CPT Professional Edition Manual, and HCPCS Level II Manual, which are essential resources for coding certification and professional practice. Keywords: medical coding study guide, MCBC exam prep, ICD 10 coding rules, CPT coding updates, HCPCS coding system, medical billing process, CMS 1500 form, healthcare documentation coding, EHR EMR PHR systems, coding compliance guidelines, diagnosis coding steps, upcoding errors billing, healthcare reimbursement