How to Choose BISAC Categories for Multi-Genre Books: A Step-by-Step Guide
How to Choose BISAC Categories for Multi-Genre Books: A Step-by-Step Guide
Key Takeaways
Selecting the right BISAC codes is crucial for multi-genre books to reach their intended audience and maximize discoverability across retail platforms.
• Choose up to three BISAC codes maximum, listing them in descending order of importance since some retailers only use the first code for categorization.
• Always select the most specific subcategory available rather than generic codes like “FICTION / General” to avoid burying your book among hundreds of thousands of competing titles.
• Never mix fiction with nonfiction codes or combine different age categories (juvenile, young adult, adult) on the same title, as this creates confusion and violates industry standards.
• Avoid pairing specific codes with their general counterparts (e.g., “Mystery & Detective / Police Procedural” with “Mystery & Detective / General”) as this creates redundancy without adding value.
• Select codes that honestly represent your book’s primary content, not peripheral themes or single chapters, to maintain reader trust and prevent negative reviews from misled audiences.
Remember: BISAC codes are free to use and serve as the backbone of book classification across bookstores, online retailers, and libraries. Strategic selection directly impacts where your book appears in searches, how it’s shelved, and ultimately, whether your target readers can find it. 
Choosing the right BISAC categories for your multi-genre book can feel like an impossible puzzle. Place it in the wrong category, and your book may never reach its intended audience.
BISAC codes for books serve as the backbone of book classification in the publishing industry, in fact. These bisac subject codes guide everything from shelving to marketing and help readers and retailers identify what your book is about[9][6]. Your story risks getting lost on digital shelves without accurate bisac subject headings.
The challenge is this: the Book Industry Study Group recommends selecting no more than three BISAC codes for any title[8]. So how do you choose wisely when your book spans multiple genres?
This piece will walk you through a step-by-step process for selecting the perfect bisac codes list for your multi-genre book.
Understanding BISAC Subject Codes for Multi-Genre Books
Image Source: Publish Drive
BISAC stands for Book Industry Standards and Communications. These nine-character alphanumeric codes represent the publishing industry’s standard method to classify books by subject matter[1]. The system has 54 major sections such as COMPUTERS, FICTION, HISTORY, and TRUE CRIME. Thousands of descriptors nest within each category[1].
Each code follows a hierarchical structure with two, three, or four levels. To name just one example, TRV025070 represents “TRAVEL / United States / South / General”[1]. With over 3,000 codes available, the system provides granular classification options way beyond traditional genre labels[2].
This specificity becomes both an asset and a challenge for multi-genre books. You can select up to three bisac subject codes and capture different facets of your book’s content[1]. Best practice recommends using fewer codes when they describe your work in detail[7].
The codes serve multiple functions throughout the supply chain. Brick-and-mortar bookstores use them to make shelving decisions and place your book alongside similar titles[4]. Online retailers rely on these bisac subject headings and determine search categorization and algorithm behavior[5]. Libraries depend on them for cataloging systems[6].
Selecting and using bisac codes for books requires no fee or permission[3]. The Book Industry Study Group maintains and updates the complete bisac codes list each year and keeps pace with evolving reader interests and publishing trends[3].
Step-by-Step Process for Choosing BISAC Categories
Image Source: NISO
“You might not want to put your book in a box or a genre or a category, but you have to, because that’s how a lot of readers find their next book.” — Joanna Penn, Author and entrepreneur
Start with the official two-step process recommended by the Book Industry Study Group[1].
Step 1: Determine the major heading that best describes your book’s content. Browse the complete BISAC Subject Headings List and click on the heading that lines up with your primary topic. Say you’ve written a mystery novel. Select “Fiction” as your major category[1].
Step 2: Identify the specific term within that category. Review all subcategory options and choose the most precise descriptor available. Say you’ve written a police procedural mystery. Select “FIC022020 FICTION / Mystery & Detective / Police Procedural” rather than stopping at the general mystery category[1].
You can select additional bisac codes to capture secondary elements when working with multi-genre books. List them in descending order of importance since some retailers only employ the first code[5]. Your primary code should reflect the main subject that best describes your book’s core content[7].
Never pair a specific code with its corresponding general code. Using both “FICTION / Mystery & Detective / Police Procedural” and “FICTION / Mystery & Detective / General” creates redundancy without adding value[8]. Avoid mixing fiction with nonfiction codes or combining different age categories like juvenile with adult classifications[8].
Keep your bisac subject codes consistent across all formats: ebooks, print and audiobooks[8].
Common Mistakes When Selecting BISAC Codes for Books
“Metadata, in short, decides whether your book is found, and by extension whether your book is bought.” — Michael Bhaskar, Digital Publishing Director at Profile Books
Several critical errors can undermine your book’s discoverability when selecting bisac categories. The most common mistake involves pairing specific codes with their general counterparts. Using both “FIC022020 FICTION / Mystery & Detective / Police Procedural” and “FIC022000 FICTION / Mystery & Detective / General” creates redundancy without adding value[7]. The specific one already implies the general category[8].
Selecting broad categories like “FIC000000 FICTION / General” wastes code slots[9]. These categories house hundreds of thousands of titles and bury your book under competition. Drill down to the most specific subcategory that represents your content[10].
Never mix fiction and nonfiction bisac codes on the same title. To name just one example, “FICTION / Religious” and “RELIGION / Christian Living / General” should not appear together[9]. This rule extends to age categories—avoid combining juvenile and adult classifications[1].
There’s another reason to be careful: selecting codes based on peripheral content. Don’t choose bisac subject codes that reflect only one chapter or a minor theme[9]. Readers searching for specific topics will feel misled if they find minimal relevant content in your 200-page book.
Misleading categorization damages reader trust and gets negative reviews[10]. Choose codes that represent your book’s primary content to maintain credibility with your audience.
Conclusion
You now have a clear roadmap for selecting the right BISAC categories for your multi-genre book. Most important, note that honest and specific categorization will serve your readers better than trying to game the system. Start with your primary genre, drill down to the most specific subcategory, and use your remaining codes in a strategic way. As a result, your book will reach its intended audience and stand out in the right marketplace.
FAQs
Q1. What exactly are BISAC codes and why do books need them? BISAC codes are nine-character alphanumeric identifiers that classify books by subject matter in the publishing industry. They help bookstores decide where to shelve your book, enable online retailers to categorize it correctly in search results, and assist libraries with cataloging. These codes are essential because they guide readers to your book when they’re searching for specific topics or genres.
Q2. How many BISAC codes should I assign to my multi-genre book? You can select up to three BISAC codes for your book, but it’s recommended to use fewer if they comprehensively describe your work. List them in descending order of importance, with your primary code reflecting the book’s core content. Some retailers only use the first code, so make sure your most important category comes first.
Q3. What’s an example of how BISAC codes are structured? BISAC codes follow a hierarchical structure with multiple levels of specificity. For example, TRV025070 represents “TRAVEL / United States / South / General,” while FIC022020 stands for “FICTION / Mystery & Detective / Police Procedural.” The system moves from broad categories to increasingly specific subcategories, allowing precise classification.
Q4. What mistakes should I avoid when selecting BISAC categories? Avoid using both a specific code and its general counterpart together, as this creates unnecessary redundancy. Don’t select overly broad categories like “FICTION / General” that bury your book among hundreds of thousands of titles. Never mix fiction with nonfiction codes or combine different age categories like juvenile with adult classifications on the same book.
Q5. How do I find the most specific BISAC code for my book? Start by identifying the major heading that best describes your book’s primary content, then drill down through the subcategories to find the most precise descriptor available. Browse the official BISAC Subject Headings List and select the most specific term rather than stopping at general categories. The more specific your code, the better your book’s discoverability among your target audience.
References
[1] – https://www.bisg.org/BISAC-FAQ
[2] – https://authornews.penguinrandomhouse.com/bisacs-cracking-the-code/
[3] – https://www.bisg.org/BISAC-Subject-Codes-main
[4] – https://greenleafbookgroup.com/learning-center/book-distribution/understanding-the-difference-between-bisac-codes-amazon-categories
[5] – https://prbythebook.com/understanding-bisac-codes-how-to-make-them-work-for-you/
[6] – https://www.supadu.com/blogs/news-and-views/top-tips-to-help-you-navigate-the-bisac-selection-process
[7] – https://www.bisg.org/selecting-a-BISAC-code
[8] – https://firebrandtech.com/resources/metadata-minute-issue-29-common-publisher-questions-about-bisac-codes
[9] – https://www.ingramspark.com/blog/bisac-subject-codes
[10] – https://www.autocrit.com/choosing-the-right-book-category/
