Sharing this is a list of sources I use when doing research. Authoritative Resources for ICD-10 1. International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) a. ICD-10-CM Official Guidelines 2. Centers for Medicare and Medicaid Services (CMS) Manuals Transmittals 3. Risk Adjustment Documentation & Coding, Second Edition, Sheri Poe Bernard 4. Acdis Outpatient Pocket Guide 5. AHA Coding Clinic for ICD-10-CM 6. Medical Abbreviations.com 7. UCSD Health Library 8. Psychiatry online DSM Library Disclaimer: This guidance is to be used for an easy reference; the ICD-9-CM and ICD-10-CM code books and the Official Guidelines for Coding and Reporting are the authoritative references for accur...