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21Symptoms, signs or clinical findings, not elsewhere classified
General symptoms, signs or clinical findings
General symptoms

MG21 category

Chills

Also indexed as

Chills

Nearby in General symptoms

MG20Cachexia
MG22Fatigue
MG23Fear of death or dying
MG24Fear of disease
MG25Feeling ill
MG26Fever of other or unknown origin
MG27Haemorrhage, not elsewhere classified
MG28Hypothermia, not associated with low environmental temperature

PreviousMG20 — Cachexia NextMG22 — Fatigue

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
MC80-MC9YSymptoms, signs or clinical findings of the circulatory system
MD10-MD6YSymptoms, signs or clinical findings of the respiratory system
MD80-ME4YSymptoms, signs or clinical findings of the digestive system or abdomen
ME60-ME6YSymptoms, signs or clinical findings involving the skin
ME80-MF1YSymptoms, signs or clinical findings of the musculoskeletal system
MF30-MG0YSymptoms, signs or clinical findings of the genitourinary system
MG20-MG7ZGeneral symptoms, signs or clinical findings
MH10-MH15Ill-defined or unknown causes of mortality
4B4YOther specified diseases of the immune system
7 more
MG20-MG4YGeneral symptoms
MG50-MG5ZFinding of microorganism resistant to antimicrobial drugs
MG60-MG6YClinical findings in specimens from other specified organs, systems or tissues
MG70-MG7ZAbnormal results, not elsewhere classified
MG20Cachexia
MG21Chills
MG22Fatigue
MG23Fear of death or dying
MG24Fear of disease
MG25Feeling ill
MG26Fever of other or unknown origin
MG27Haemorrhage, not elsewhere classified
MG28Hypothermia, not associated with low environmental temperature
MG29Oedema
MG2AAgeing associated decline in intrinsic capacity
MG30-MG3ZPain
MG40Shock
MG41Sleep disturbance, not elsewhere classified
MG42Somnolence, not elsewhere classified
9 more

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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