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Chapters ENES DE

01Certain infectious or parasitic diseases
Other bacterial diseases
1C17Diphtheria

1C17.1 category

Nasal diphtheria

Also indexed as

Nasal diphtheriaanterior nasal diphtheriadiphtheria of nasopharynxdiphtheritic nasopharynx

Nearby in Diphtheria

1C17.0Pharyngeal or tonsillar diphtheria
1C17.2Laryngeal diphtheria
1C17.3Cutaneous diphtheria
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Previous1C17.0 — Pharyngeal or tonsillar diphtheria Next1C17.2 — Laryngeal diphtheria

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
1B10-1B2ZMycobacterial diseases
1B40-1B5ZCertain staphylococcal or streptococcal diseases
1B70-1B7ZPyogenic bacterial infections of the skin or subcutaneous tissues
1B90-1B9ZCertain zoonotic bacterial diseases
1C10-1C4ZOther bacterial diseases
1C60-1C62.ZHuman immunodeficiency virus disease
1C80-1C8ZViral infections of the central nervous system
1D00-1D0ZNon-viral or unspecified infections of the central nervous system
1D20-1D2ZDengue
14 more
1C13Tetanus
1C14Obstetrical tetanus
1C15Tetanus neonatorum
1C16Gas gangrene
1C17Diphtheria
1C18Brazilian purpuric fever
1C19Legionellosis
1C1AListeriosis
1C1BNocardiosis
20 more
1C17.0Pharyngeal or tonsillar diphtheria
1C17.1Nasal diphtheria
1C17.2Laryngeal diphtheria
1C17.3Cutaneous diphtheria
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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