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Chapters ENES DE

01Certain infectious or parasitic diseases
Pyogenic bacterial infections of the skin or subcutaneous tissues

1B71 category

Necrotising fasciitis

5 subordinate codes

1B71.0Streptococcal necrotising fasciitis
1B71.1Polymicrobial necrotising fasciitis
1B71.2Neonatal necrotising fasciitis
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Nearby in Pyogenic bacterial infections of the skin or subcutaneous tissues

1B70Bacterial cellulitis, erysipelas or lymphangitis
1B72Impetigo
1B73Ecthyma
1B74Superficial bacterial folliculitis
1B75Deep bacterial folliculitis or pyogenic abscess of the skin
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Previous1B70 — Bacterial cellulitis, erysipelas or lymphangitis Next1B72 — Impetigo

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
1A00-1A40.ZGastroenteritis or colitis of infectious origin
1A60-1A9ZPredominantly sexually transmitted infections
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
14 more
1B70Bacterial cellulitis, erysipelas or lymphangitis
1B71Necrotising fasciitis
1B72Impetigo
1B73Ecthyma
1B74Superficial bacterial folliculitis
1B75Deep bacterial folliculitis or pyogenic abscess of the skin
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
1B71.0Streptococcal necrotising fasciitis
1B71.1Polymicrobial necrotising fasciitis
1B71.2Neonatal necrotising fasciitis
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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