Chapter 1: Certain Infectious or Parasitic Diseases
ICD-11 codes 1A00-1H0Z
Covers infections caused by bacteria, viruses, fungi, and parasites, including gastroenteritis, tuberculosis, HIV, sexually transmitted infections, and viral hepatitis. ICD-11 reorganizes infectious diseases with updated classification of antimicrobial resistance and emerging infections.
1A00-1A0Z
Gastroenteritis and colitis of infectious origin
No category codes found in this block.
1A40-1A4Z
Bacterial intestinal infections
No category codes found in this block.
1B00-1B7Z
Mycobacterial diseases
No category codes found in this block.
1B80-1B9Z
Certain zoonotic bacterial diseases
No category codes found in this block.
1C00-1C4Z
Other bacterial diseases
No category codes found in this block.
1C60-1C6Z
Infections predominantly sexually transmitted
No category codes found in this block.
1C80-1C8Z
Other spirochaetal diseases
No category codes found in this block.
1D00-1D0Z
Chlamydial diseases
No category codes found in this block.
1D40-1D4Z
Rickettsioses
No category codes found in this block.
1D60-1D6Z
Viral infections of the central nervous system
No category codes found in this block.
1D80-1D8Z
Arthropod-borne viral fevers and haemorrhagic fevers
No category codes found in this block.
1E00-1E0Z
Viral infections characterised by skin or mucous membrane lesions
No category codes found in this block.
1E40-1E5Z
Viral hepatitis
No category codes found in this block.
1E60-1E6Z
Human immunodeficiency virus disease
No category codes found in this block.
1E80-1E8Z
Other viral diseases
No category codes found in this block.
1F00-1F0Z
Mycoses
No category codes found in this block.
1F20-1F2Z
Protozoal diseases
No category codes found in this block.
1F40-1F5Z
Helminthiases
No category codes found in this block.
1F60-1F6Z
Ectoparasitic infestations
No category codes found in this block.
1G00-1G0Z
Sequelae of infectious diseases
No category codes found in this block.
1G40-1G4Z
Bacterial, viral and other infectious agents
No category codes found in this block.
1G80-1G8Z
Certain infections of the skin or subcutaneous tissue
No category codes found in this block.
1H00-1H0Z
Other and unspecified infectious diseases
No category codes found in this block.
Frequently Asked Questions
What ICD-11 codes are in Chapter 1?
Chapter 1: Certain Infectious or Parasitic Diseases covers ICD-11 codes 1A00-1H0Z. It contains 23 code blocks with 0 top-level categories.
What conditions does ICD-11 Chapter 1 cover?
Covers infections caused by bacteria, viruses, fungi, and parasites, including gastroenteritis, tuberculosis, HIV, sexually transmitted infections, and viral hepatitis. ICD-11 reorganizes infectious diseases with updated classification of antimicrobial resistance and emerging infections. This chapter includes codes from 1A00-1H0Z.
How is ICD-11 Chapter 1 different from ICD-10?
ICD-11 reorganized many chapters compared to ICD-10. Chapter 1 (Certain Infectious or Parasitic Diseases) may include conditions that were in different ICD-10 chapters, and some conditions previously here may have moved. ICD-11 also adds new chapters for sleep-wake disorders, sexual health, and traditional medicine that did not exist in ICD-10.
How many code blocks are in ICD-11 Chapter 1?
Chapter 1 has 23 code blocks: 1A00-1A0Z (Gastroenteritis and colitis of infectious origin), 1A40-1A4Z (Bacterial intestinal infections), 1B00-1B7Z (Mycobacterial diseases), 1B80-1B9Z (Certain zoonotic bacterial diseases), and 19 more.
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