Chapter 8: Signs, Symptoms, and Ill-defined Conditions. In: Medical Coding Essentials: A Guide to Master ICD-10-CM Diagnostics [Internet]. ThinkPlus Pharma Publications; 2025 [cited 2025 Dec. 14]. pp. 216-33. Available from: http://books.jopir.in/index.php/thpl/catalog/book/7/chapter/53