This document is a guide that provides essential information for inpatient billing practices. It outlines general billing tips, emphasizing the importance of verifying patient insurance coverage and ensuring accurate demographic information is recorded. The guide details common inpatient CPT codes, including those for initial hospital care, subsequent hospital care, and hospital discharge management. It also includes evaluation and management codes for inpatient services and diagnostic imaging codes. Additionally, the document discusses commonly used modifiers in inpatient billing, such as modifier -25 for significant, separately identifiable services. The guide addresses common insurance claim denials and offers solutions, highlighting the need for accurate documentation to support medical necessity. It emphasizes the importance of regular updates and training for the billing team to navigate the complexities of inpatient billing effectively. The cheat sheet serves as a quick reference to ensure compliance with billing practices and maximize reimbursement.