AutoICD API

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

Bacterial intestinal infections

1A00-1A40

Gastroenteritis or colitis of infectious origin

1A10-1A1Z

Bacterial foodborne intoxications

1A20-1A2Z

Viral intestinal infections

1A30-1A3Z

Protozoal intestinal infections

1A60-1A6Z

Syphilis

1A60-1A9Z

Predominantly sexually transmitted infections

1A70-1A7Z

Gonococcal infection

1A80-1A8Z

Sexually transmissible infections due to chlamydia

1B10-1B1Z

Tuberculosis

1B10-1B2Z

Mycobacterial diseases

1B40-1B42

Acute rheumatic fever

1B40-1B5Z

Certain staphylococcal or streptococcal diseases

1B70-1B7Z

Pyogenic bacterial infections of the skin or subcutaneous tissues

1B90-1B9Z

Certain zoonotic bacterial diseases

1C10-1C4Z

Other bacterial diseases

1C20-1C2Z

Other diseases due to chlamydiae

1C30-1C3Z

Rickettsioses

1C60-1C62

Human immunodeficiency virus disease

1C80-1C8Z

Viral infections of the central nervous system

1D00-1D0Z

Non-viral and unspecified infections of the central nervous system

1D20-1D2Z

Dengue

1D40-1D4Z

Certain arthropod-borne viral fevers

1D60-1D6Z

Certain zoonotic viral diseases

1D80-1E1Z

Certain other viral diseases

1D90-1D9Z

Viral infection of unspecified site

1E30-1E32

Influenza

1E50-1E5Z

Viral hepatitis

1E70-1E7Z

Infections due to poxvirus

1E70-1F0Z

Viral infections characterised by skin or mucous membrane lesions

1E80-1E8Z

Human papillomavirus infection of skin or mucous membrane

1E90-1E91

Varicella zoster virus infections

1F20-1F2Z

Mycoses

1F40-1F4Z

Malaria

1F40-1G2Z

Parasitic diseases

1F50-1F5Z

Nonintestinal protozoal diseases

1F60-1F6Z

Diseases due to nematodes

1F60-1F9Z

Helminthiases

1F70-1F7Z

Diseases due to cestodes

1F80-1F8Z

Diseases due to trematodes

1G00-1G0Z

Infestations by ectoparasites

1G40-1G41

Sepsis

1G80-1G8Z

Sequelae of infectious diseases

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 43 code blocks with 342 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 43 code blocks: 1A00-1A0Z (Bacterial intestinal infections), 1A00-1A40 (Gastroenteritis or colitis of infectious origin), 1A10-1A1Z (Bacterial foodborne intoxications), 1A20-1A2Z (Viral intestinal infections), and 39 more.

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