Book excerpt: Grounded in author Allen Frances's extensive clinical experience, this comprehensive yet concise guide helps the busy clinician find the right psychiatric diagnosis and avoid the many pitfalls that lead to errors. Covering every disorder routinely encountered in clinical practice, Frances provides the ICD-9-CM and ICD-10-CM (where feasible) codes required for billing, a useful screening question, a colorful descriptive prototype, lucid diagnostic tips, and a discussion of other disorders that must be ruled out. The book closes with an index of the most common presenting symptoms, listing possible diagnoses that must be considered for each. Frances was instrumental in the development of past editions of the DSM and provides helpful cautions on questionable aspects of DSM-5. The revised edition features ICD-10-CM codes where feasible throughout the chapters, plus a Crosswalk to ICD-10-CM Codes in the Appendix. The Appendix, links to further coding resources, and periodic updates can also be accessed online (www.guilford.com/frances_updates).