Diagnostic codes are standardized numerical or alphanumeric codes used by healthcare professionals to identify specific medical conditions, diseases, or injuries. These codes help in documenting patient diagnoses, facilitating communication among providers, and ensuring accurate billing and insurance claims. Common coding systems include the International Classification of Diseases (ICD) and the Current Procedural Terminology (CPT). These codes play a crucial role in healthcare data analysis, research, and public health reporting. By categorizing health information, diagnostic codes enable better tracking of disease trends, resource allocation, and the development of treatment protocols. Accurate coding is essential for effective patient care and healthcare management.