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Chapters ENES DE

01Certain infectious or parasitic diseases
Parasitic diseases
Helminthiases

1F90 category

Other or unspecified infestation by parasitic worms

5 subordinate codes

1F90.0Mixed intestinal helminthiases
1F90.1Intestinal parasitic infestation not otherwise specified
1F90.2Intestinal helminthiasis, unspecified
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Nearby in Helminthiases

1F60-1F6ZDiseases due to nematodes
1F70-1F7ZDiseases due to cestodes
1F80-1F8ZDiseases due to trematodes
1F91Diphyllobothriasis and sparganosis
4B4ZDiseases of the immune system, unspecified

Previous1F80-1F8Z — Diseases due to trematodes Next1F91 — Diphyllobothriasis and sparganosis

Browse ICD-11

01Certain infectious or parasitic diseases
02Neoplasms
03Diseases of the blood or blood-forming organs
04Diseases of the immune system
05Endocrine, nutritional or metabolic diseases
06Mental, behavioural or neurodevelopmental disorders
07Sleep-wake disorders
08Diseases of the nervous system
09Diseases of the visual system
10Diseases of the ear or mastoid process
11Diseases of the circulatory system
12Diseases of the respiratory system
13Diseases of the digestive system
14Diseases of the skin
15Diseases of the musculoskeletal system or connective tissue
16Diseases of the genitourinary system
17Conditions related to sexual health
18Pregnancy, childbirth or the puerperium
19Certain conditions originating in the perinatal period
20Developmental anomalies
21Symptoms, signs or clinical findings, not elsewhere classified
22Injury, poisoning or certain other consequences of external causes
23External causes of morbidity or mortality
24Factors influencing health status or contact with health services
25Codes for special purposes
26Supplementary Chapter Traditional Medicine Conditions
VSupplementary section for functioning assessment
XExtension Codes
1E30-1E32Influenza
1E50-1E5ZViral hepatitis
1E70-1F0ZViral infections characterised by skin or mucous membrane lesions
1F20-1F2ZMycoses
1F40-1G2ZParasitic diseases
1G40-1G41Sepsis
1G60Certain other disorders of infectious origin
1G80-1G8ZSequelae of infectious diseases
4B4ZDiseases of the immune system, unspecified
14 more
1F40-1F4ZMalaria
1F50-1F5ZNonintestinal protozoal diseases
1F60-1F9ZHelminthiases
1G00-1G0ZInfestations by ectoparasites
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
1F60-1F6ZDiseases due to nematodes
1F70-1F7ZDiseases due to cestodes
1F80-1F8ZDiseases due to trematodes
1F90Other or unspecified infestation by parasitic worms
1F91Diphyllobothriasis and sparganosis
4B4ZDiseases of the immune system, unspecified
1F90.0Mixed intestinal helminthiases
1F90.1Intestinal parasitic infestation not otherwise specified
1F90.2Intestinal helminthiasis, unspecified
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).

Release 2026-01. View this entity in the official WHO ICD-11 browser.

This page reproduces WHO classification content for reference. It is not medical advice and must not be used to diagnose or treat. For coding decisions, consult the official release and your national coding guidelines.

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