Foreword Acknowledgments How to Use This Manual ICD-10-CM Official Guidelines for Coding and Reporting FY 2022 Alphabetic Index Tabular List 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) Chapter 22. Codes for special purposes (U00-U85) ICD-10-CM External Cause of Injuries Due to Collisions Table ICD-10-CM External Cause of Injuries Index Table of Drugs and Chemicals.