ICD-11 Code Directory

Browse the WHO's ICD-11 (International Classification of Diseases, 11th Revision) code set organized by 28 chapters. Each code includes descriptions, clinical synonyms, SNOMED CT terms, UMLS cross-references, and mappings to ICD-10-CM equivalents.

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1A00-1H0Z

Chapter 1: Certain Infectious or Parasitic Diseases

23 code blocks

2A00-2F9Z

Chapter 2: Neoplasms

23 code blocks

3A00-3C9Z

Chapter 3: Diseases of the Blood or Blood-Forming Organs

10 code blocks

4A00-4B4Z

Chapter 4: Diseases of the Immune System

5 code blocks

5A00-5D46

Chapter 5: Endocrine, Nutritional or Metabolic Diseases

12 code blocks

6A00-6E8Z

Chapter 6: Mental, Behavioural or Neurodevelopmental Disorders

18 code blocks

7A00-7B2Z

Chapter 7: Sleep-Wake Disorders

6 code blocks

8A00-8E7Z

Chapter 8: Diseases of the Nervous System

15 code blocks

9A00-9E1Z

Chapter 9: Diseases of the Visual System

13 code blocks

AA00-AC0Z

Chapter 10: Diseases of the Ear or Mastoid Process

8 code blocks

BA00-BE2Z

Chapter 11: Diseases of the Circulatory System

16 code blocks

CA00-CB7Z

Chapter 12: Diseases of the Respiratory System

7 code blocks

DA00-DE2Z

Chapter 13: Diseases of the Digestive System

18 code blocks

EA00-EM0Z

Chapter 14: Diseases of the Skin

22 code blocks

FA00-FC0Z

Chapter 15: Diseases of the Musculoskeletal System or Connective Tissue

9 code blocks

GA00-GC8Z

Chapter 16: Diseases of the Genitourinary System

12 code blocks

HA00-HA8Z

Chapter 17: Conditions Related to Sexual Health

4 code blocks

JA00-JB6Z

Chapter 18: Pregnancy, Childbirth or the Puerperium

6 code blocks

KA00-KD5Z

Chapter 19: Certain Conditions Originating in the Perinatal Period

12 code blocks

LA00-LD9Z

Chapter 20: Developmental Anomalies

12 code blocks

MA00-MH2Z

Chapter 21: Symptoms, Signs or Clinical Findings, Not Elsewhere Classified

16 code blocks

NA00-NF2Z

Chapter 22: Injury, Poisoning or Certain Other Consequences of External Causes

24 code blocks

PA00-PL2Z

Chapter 23: External Causes of Morbidity or Mortality

16 code blocks

QA00-QF4Z

Chapter 24: Factors Influencing Health Status or Contact With Health Services

11 code blocks

RA00-RA2Z

Chapter 25: Codes for Special Purposes

1 code block

SA00-SJ3Z

Chapter 26: Supplementary Chapter: Traditional Medicine Conditions

9 code blocks

VA00-VC5Z

Chapter 27: Supplementary Chapter: Functioning Assessment

3 code blocks

XA0000-XY96

Chapter 28: Extension Codes

10 code blocks

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