The HS code for books typically falls under Chapter 49 of the Harmonized System Nomenclature, which covers “Printed Books, Newspapers, Pictures and Other Products of the Printing Industry.

HS Code Chapter 49

1. For the purposes of chapter 49 the term “printed” also means reproduced by means of a duplicating machine, produced under the control of an automatic data processing machine, embossed, photographed, photocopied, thermocopied, or typewritten.
2. Newspapers, journals, and periodicals which are bound otherwise than in paper, and sets of newspapers, journals, or periodicals comprising more than one issue under a single cover are to be classified in heading 4901, whether or not containing advertising material.
3. Heading 4901 also covers:

(a) A collection of printed reproductions of, for example, works of art or drawings, with a relative text, put up with numbered pages in a form suitable for binding into one or more volumes;

(b) A pictorial supplement accompanying and subsidiary to, a bound volume; and

(c) Printed parts of books or booklets, in the form of assembled or separate sheets or signatures, constituting the whole or a part of a complete work and designed for binding. However, printed pictures or illustrations not bearing a text, whether in the form of signatures or separate sheets, fall in heading 4911.

4. Subject to note 3 of this chapter, heading 4901 does not cover publications that are essentially devoted to advertising (for example, brochures, pamphlets, leaflets, trade catalogs, yearbooks published by trade associations, and tourist promotional literature). Such publications are to be classified in heading 4911.
5. For the purposes of heading 4903, the expression “children’s picture books” means books for children in which the pictures from the principal interest and the text  is subsidiary.