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Exam (elaborations)

WGU D521 Introduction to Medical Coding – Key Terms, ICD-10, CPT, HCPCS & Revenue Cycle Review

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This document provides a concise review of key concepts for WGU D521 Introduction to Medical Coding, covering diagnosis and procedure coding, morbidity, mortality, comorbidity, complications, principal diagnosis, and the history of ICD revisions including ICD-6, ICD-8, ICD-10-PCS, and ICD-10-CM. It also covers health record types such as hybrid, integrated, longitudinal, and source-oriented records, major organizations including AHIMA, AHA, WHO, and The Joint Commission, common diagnosis coding errors, procedure coding with CPT, HCPCS, modifiers, RBRVS, and place of service codes, root operations, prospective payment systems including IPPS and OPPS, reimbursement methods such as fee-for-service, reasonable cost, episode-of-care, retrospective and prospective payment, the revenue cycle and revenue management life cycle, claim adjudication, claim denial, medical necessity, ABN, CDM, DNFB, EOB, and the National Correct Coding Initiative. Each term is defined clearly for exam preparation and practical application.

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