Office Administrative Assistant Practice Exam 2025 – Your All-in-One Guide to Exam Success!

The most relevant book for a Medical Coder working with the Medical Administrative Assistant in the context provided is the ICD-10 (International Classification of Diseases, Tenth Revision). This coding manual is used for the classification of diseases and health-related issues, including inpatient diagnoses.

ICD-10 is essential for medical coding and billing processes, and it provides the standardized codes that coders assign to diagnoses and procedures for health care billing and statistical purpose. These codes are critical for insurance reimbursements and maintaining accurate patient records.

While CPT (Current Procedural Terminology) is used for coding outpatient procedures and services, HCPCS (Healthcare Common Procedure Coding System) is typically used for Medicare and Medicaid for billing purposes. DRG (Diagnosis-Related Group) refers more to a payment method used for inpatient stays rather than a coding manual itself.

In this context, if assistance is needed with medical coding, the ICD-10 is the primary resource where the necessary diagnoses codes would be found, making it the most appropriate answer in this scenario.