Chapter 1. Certain Infectious and Parasitic Diseases (A00-B99)
Chapter 2. Neoplasms (C00-D49)
Chapter 3. Diseases of the Blood and Blood-forming Organs and Certain Disorders Involving the Immune Mechanism (D50-D89)
Chapter 4. Endocrine, Nutritional and Metabolic Diseases (E00-E89)
Chapter 5. Mental, Behavioral, and Neurodevelopmental Disorders (F01-F99)
Chapter 6. Diseases of the Nervous System (G00-G99)
Chapter 7. Diseases of the Eye and Adnexa (H00-H59)
Chapter 8. Diseases of the Ear and Mastoid Process (H60-H95)
Chapter 9. Diseases of the Circulatory System (I00-I99)
Chapter 10. Diseases of the Respiratory System (J00-J99)
Chapter 11. Diseases of the Digestive System (K00-K95)
Chapter 12. Diseases of the Skin and Subcutaneous Tissue (L00-L99)
Chapter 13. Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)
Chapter 14. Diseases of the Genitourinary System (N00-N99)
Chapter 15. Pregnancy, Childbirth, and the Puerperium (O00-O9A)
Chapter 16. Certain Conditions Originating in the Perinatal Period (P00-P96)
Chapter 17. Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99)
Chapter 18. Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99)
Chapter 19. Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
Chapter 20. External Causes of Morbidity (V00-Y99)
Chapter 21. Factors Influencing Health Status and Contact With Health Services (Z00-Z99)
Appendix A. Valid 3-character ICD-10-CM Codes
Appendix B. Pharmacology List 2018
Appendix C. Z Codes for Long-Term Drug Use with Associated Drugs
Appendix D. Z Codes Only as Principal/First-Listed Diagnosis.