The following links are provided for your convenience; book may be purchased from any supplier. ICD-10-CM Code Book 2021 (Softbound) (AHIMA) ICD-10-CM Code Book 2021 (Spiral) (AHIMA) ICD-10-CM 2021: The Complete Official Codebook with Guidelines (AMA) ICD-10-CM 2021 Expert for Hospitals with Guidelines (Optum360º) Buck’s 2021 ICD-10-CM for Hospitals (Elsevier)