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Chapters ENES DE

24Factors influencing health status or contact with health services
Reasons for contact with the health services
Risk factors associated with infectious or certain other conditions

QD00-QD0Z block

Carrier of infectious disease agent

7 subordinate codes

QD00Carrier of salmonella typhi
QD01Carrier of intestinal infectious agents
QD02Carrier of corynebacterium diphtheriae
QD03Carrier of infectious agents with a predominantly sexual mode of transmission
QD04Asymptomatic colonization of the skin by virulent or therapy resistant bacteria
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Nearby in Risk factors associated with infectious or certain other conditions

QC90Contact with or exposure to communicable diseases
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

PreviousQC90 — Contact with or exposure to communicable diseases Next4B4Y — Other specified diseases of the immune system

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
QA00-QD3ZReasons for contact with the health services
QD50-QF2ZFactors influencing health status
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
QB80-QB8ZContact with health services for specific surgical interventions
QB90-QB9ZContact with health services for nonsurgical interventions not involving devices
QC00-QC0ZContact with health services for immunizations or certain other prophylactic measures
QC10-QC1ZInterventions not carried out
QC20-QC2ZContact with health services for the health of others
QC30Malingering
QC40-QC8ZPersonal or family history or late effect of prior health problems
QC90-QD2ZRisk factors associated with infectious or certain other conditions
QD30-QD3ZConcern about body appearance
11 more
QC90Contact with or exposure to communicable diseases
QD00-QD0ZCarrier of infectious disease agent
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
QD00Carrier of salmonella typhi
QD01Carrier of intestinal infectious agents
QD02Carrier of corynebacterium diphtheriae
QD03Carrier of infectious agents with a predominantly sexual mode of transmission
QD04Asymptomatic colonization of the skin by virulent or therapy resistant bacteria
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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