Do fiction book require numbers in dewy decimal system?

Fiction books in libraries are typically assigned Dewey Decimal Classification numbers in the 800s, specifically in the 813-819 range for American literature and its subdivisions. However, many libraries use different classification systems for fiction, such as the Library of Congress Classification system, which assigns fiction books a combination of letters and numbers based on author names and subjects. In general, while Dewey Decimal numbers can be used for fiction books, they are not a strict requirement and may vary depending on the library's cataloging practices.