Where can a coder find updates on coding practices and procedures?

The choice related to Pub 100 References is the most relevant source for coders looking for updates on coding practices and procedures. The Pub 100 series includes essential documents published by the Centers for Medicare & Medicaid Services (CMS) that provide comprehensive information about Medicare policies, coding guidelines, and billing practices. These resources are continually updated to reflect changes in healthcare regulations, coding updates, and payment policies, making them a crucial tool for coders to ensure compliance and accuracy in their work.

The other options, while useful in different contexts, do not specifically focus on comprehensive updates regarding coding practices. For instance, abbreviations and acronyms are helpful for quick reference, but they do not provide updates or detailed guidance on coding procedures. The National Correct Coding Initiative is aimed primarily at preventing improper coding and may not include all updates on coding practices. The Quality Reporting System focuses on metrics for quality reporting rather than on coding updates specifically.