Code Assignment: Medical coders review clinical documentation provided by healthcare providers (such as physicians, nurses, and therapists) to accurately assign diagnostic codes (ICD-10-CM) and procedural codes (CPT, HCPCS Level II) for each patient encounter. ICD Coding: International Classification of Diseases, 10th Edition, Clinical Modification (ICD-10-CM) codes are used to classify diagnoses and reasons for healthcare encounters. These codes are essential for medical billing and reimbursement. CPT Coding: Current Procedural Terminology (CPT) codes describe medical procedures and services performed by healthcare providers. CPT codes are used to report procedures and services to insurance companies for reimbursement. HCPCS Level II Coding: Healthcare Common Procedure Coding System (HCPCS) Level II codes are used for supplies, equipment, and services not covered by CPT codes. These codes are used primarily for billing Medicare, Medicaid, and insurance companies. Regulatory Compliance: Medical coders must adhere to coding guidelines, regulations, and compliance standards set forth by government agencies (such as CMS in the United States) and healthcare organizations (such as AHIMA and AAPC). Accuracy and Precision: Medical coders ensure accuracy and precision in code assignment to reflect the patient's condition and the healthcare services provided. Correct coding impacts reimbursement, healthcare analytics, and patient care quality reporting. Medical Terminology: Medical coders need a strong understanding of medical terminology, anatomy, physiology, and disease processes to accurately assign diagnostic and procedural codes based on clinical documentation. Software and Technology: Medical coders use electronic health record (EHR) systems, coding software, encoders, and online resources to assist in code assignment, verification, and compliance with coding guidelines. Auditing and Review: Some medical coders perform coding audits and reviews to ensure compliance with coding standards, accuracy of code assignment, and identification of potential coding errors or discrepancies. Continuing Education: Medical coders participate in continuing education, workshops, seminars, and certification programs (such as CPC, CCS, or RHIT) to stay updated with coding changes, regulations, and best practices in medical coding. Communication: Medical coders may communicate with healthcare providers to clarify documentation or obtain additional information needed for accurate code assignment. Ethics and Confidentiality: Medical coders adhere to professional ethics, confidentiality regulations (such as HIPAA), and guidelines for protecting patient information while performing coding tasks.