Chapter 21: Symptoms, Signs or Clinical Findings, Not Elsewhere Classified
ICD-11 codes MA00-MH2Z
Covers symptoms and signs that do not yet have a definitive diagnosis, including chest pain, abdominal pain, fever, cough, headache, fatigue, and abnormal lab results. These codes are commonly used when a workup is still in progress.
MA00-MA0Y
Symptoms or signs of blood, blood-forming organs, or the immune system
MA10-MA1Y
Clinical findings in blood, blood-forming organs, or the immune system
MA10Abnormal serum enzyme levels
MA11Clinical findings of hormones in blood, blood-forming organs, or the immune system
MA12Clinical findings of drugs, medicaments and biological substances in blood, blood-forming organs, or the immune system
MA13Clinical findings of substances chiefly nonmedicinal as to source in blood, blood-forming organs, or the immune system
MA14Immunological findings in blood, blood-forming organs, or the immune system
MA15Microbiological findings in blood, blood-forming organs, or the immune system
MA16Cytological findings in blood, blood-forming organs, or the immune system
MA17Histological findings in blood, blood-forming organs, or the immune system
MA18Certain clinical findings of blood chemistry
MA19Certain abnormalities of plasma proteins
MA1AElevated erythrocyte sedimentation rate or abnormality of plasma viscosity
MA1YOther specified clinical findings in blood, blood-forming organs, or the immune system
MA50-MA51
Results of function studies of the endocrine, nutritional or metabolic diseases
MA50-MA6Y
Symptoms, signs or clinical findings of endocrine, nutritional or metabolic diseases
MA80-MA8Y
Symptoms or signs involving speech, language or voice
MA80-MB0Y
Symptoms, signs or clinical findings of speech, language or voice
MB20-MB2Y
Mental or behavioural symptoms, signs or clinical findings
MB20Symptoms, signs or clinical findings involving consciousness
MB21Symptoms, signs or clinical findings involving cognition
MB22Symptoms or signs involving motivation or energy
MB23Symptoms or signs involving appearance or behaviour
MB24Symptoms or signs involving mood or affect
MB25Symptoms or signs involving form of thought
MB26Symptoms or signs involving content of thought
MB27Symptoms or signs involving perceptual disturbance
MB28Symptoms or signs related to personality features
MB29Symptoms or signs involving eating and related behaviour
MB2ASymptoms or signs involving elimination
MB2YOther specified mental or behavioural symptoms, signs or clinical findings
MB40-MB6Y
Symptoms or signs involving the nervous system
MB40Sensation disturbance
MB41Disturbances of smell or taste
MB42Phonophobia
MB43Dyssomnia
MB44Abnormalities of gait or mobility
MB45Lack of coordination
MB46Abnormal involuntary movements
MB47Abnormality of tonus or reflex
MB48Dizziness or giddiness
MB49Aura
MB4AApraxia
MB4BSymbolic dysfunctions
MB4CGerstmann syndrome
MB4DHeadache, not elsewhere classified
MB60Sleeptalking
MB6YOther specified symptoms or signs involving the nervous system
MB40-MB9Y
Symptoms, signs or clinical findings of the nervous system
MB50-MB5Z
Paralytic symptoms
MB70-MB7Y
Clinical findings in the nervous system
MC10-MC1Y
Symptoms or signs involving the visual system
MC10Eye appearance abnormal
MC11Eye sensation abnormal
MC12Chronic enlargement of lacrimal gland
MC13Epiphora
MC14Eye discharge
MC15Red eye
MC16Pallor conjunctiva
MC17Icteric sclera
MC18Ocular pain
MC19Quadrantanopia
MC1AVisual floaters
MC1BSymptom or complaint of the eyelid
MC1CSymptom or complaint of glasses
MC1DSymptom or complaint of contact lens
MC1YOther specified symptoms or signs involving the visual system
MC10-MC2Y
Symptoms, signs or clinical findings of the visual system
MC40-MC4Y
Symptoms or signs involving the ear or mastoid process
MC40-MC6Y
Symptoms, signs or clinical findings of ear or mastoid process
MC80-MC8Y
Symptoms or signs involving the circulatory system
MC80Abnormal blood-pressure reading, without diagnosis
MC81Abnormalities of heart beat
MC82Cardiac arrest
MC83Cardiac murmurs or other cardiac sounds
MC84Cardiovascular pain
MC85Gangrene
MC86Precordial pain
MC87Pressure or tightness of heart
MC88Prominent veins
MC8YOther specified symptoms or signs involving the circulatory system
MC80-MC9Y
Symptoms, signs or clinical findings of the circulatory system
MD10-MD3Y
Symptoms or signs involving the respiratory system
MD10Abnormal sputum
MD11Abnormalities of breathing
MD12Cough
MD30Pain in throat or chest
MD31Pleurisy
MD32Rales
MD33Respiratory arrest
MD34Symptom or complaint of the nose
MD35Symptom or complaint of the sinus
MD36Symptom or complaint of the throat
MD3YOther specified symptoms or signs involving the respiratory system
MD10-MD6Y
Symptoms, signs or clinical findings of the respiratory system
MD20-MD2Z
Haemorrhage from respiratory passages
MD40-MD4Y
Clinical findings in the respiratory system
MD80-ME1Y
Symptoms or signs involving the digestive system or abdomen
MD80-ME4Y
Symptoms, signs or clinical findings of the digestive system or abdomen
MD90-MD9Y
Symptoms related to the upper gastrointestinal tract
ME00-ME0Y
Symptoms related to the lower gastrointestinal tract or abdomen
ME00Abdominal compartment syndrome
ME01Abdominal distension
ME02Abdominal rigidity
ME03Abnormal bowel sounds
ME04Ascites
ME05Change in bowel habit
ME06Chronic enteritis of uncertain aetiology
ME07Faecal incontinence
ME08Flatulence and related conditions
ME09Rectal tenesmus
ME0AVisible peristalsis
ME0BProblems with defaecation, not otherwise specified
ME0YOther specified symptoms related to the lower gastrointestinal tract or abdomen
ME20-ME2Y
Clinical findings in the digestive system
ME20Clinical findings in specimens from digestive organs or abdominal cavity
ME21Clinical findings on diagnostic imaging of liver or biliary tract
ME22Clinical findings on diagnostic imaging of digestive tract
ME23Results of function studies of the digestive system
ME24Clinical manifestations of the digestive system
ME2YOther specified clinical findings in the digestive system
ME60-ME6Y
Symptoms, signs or clinical findings involving the skin
ME60Skin lesion of uncertain or unspecified nature
ME61Subcutaneous swelling, mass or lump of uncertain or unspecified nature
ME62Acute skin eruption of uncertain or unspecified nature
ME63Chronic skin disorder of uncertain or unspecified nature
ME64Non-specific cutaneous vascular signs
ME65Disturbances of skin sensation of unspecified aetiology
ME66Miscellaneous non-specific skin-related symptoms and signs
ME67Skin disorder of uncertain or unspecified nature
ME6YOther specified symptoms or signs involving the skin
ME80-ME8Y
Symptoms or signs of the musculoskeletal system
ME80-MF1Y
Symptoms, signs or clinical findings of the musculoskeletal system
ME90-ME9Y
Clinical findings in the musculoskeletal system
ME90Clinical findings on diagnostic imaging of skull and head
ME91Clinical findings on diagnostic imaging of limbs
ME92Clinical findings on diagnostic imaging of other parts of musculoskeletal system
ME93Biomechanical lesions, not elsewhere classified
ME9YOther specified clinical findings in the musculoskeletal system
MF30-MF3Y
Symptoms, signs or clinical findings involving the female genital system
MF30Breast lump or mass female
MF31Breast or lactation symptom or complaint
MF32Menopausal symptom or complaint
MF33Premenstrual symptom or complaint
MF34Pregnancy symptom or complaint
MF35Postpartum symptom or complaint
MF36Other symptom or complaint of vagina
MF37Symptom or complaint of female nipple
MF38Symptom or complaint of female pelvis
MF39Symptom or complaint of the vulva
MF3AVaginal discharge
MF3YOther specified symptoms, signs or clinical findings involving the female genital system
MF30-MG0Y
Symptoms, signs or clinical findings of the genitourinary system
MF40-MF4Y
Symptoms, signs or clinical findings involving the male genital system
MF50-MF5Y
Symptoms, signs or clinical findings involving the urinary system
MF50Abnormal micturition
MF51Anuria or oliguria
MF52Bladder pain
MF53Extrarenal uraemia
MF54Macroscopic changes of size of the kidney
MF55Polyuria
MF56Renal colic
MF57Symptom or complaint of bladder
MF58Urethral discharge
MF59Urinary symptom or complaint
MF5YOther specified symptoms, signs or clinical findings involving the urinary system
MF60-MF6Z
Clinical findings in specimens from female genital organs
MF60Abnormal level of enzymes in specimens from female genital organs
MF61Abnormal level of hormones in specimens from female genital organs
MF62Abnormal level of drugs, medicaments and biological substances in specimens from female genital organs
MF63Abnormal level of substances chiefly nonmedicinal as to source in specimens from female genital organs
MF64Abnormal immunological findings in specimens from female genital organs
MF65Abnormal microbiological findings in specimens from female genital organs
MF66Abnormal cytological findings in specimens from female genital organs
MF67Abnormal histological findings in specimens from female genital organs
MF68Abnormal chromosomal findings in specimens from female genital organs
MF6YOther specified clinical findings in specimens from female genital organs
MF6ZClinical findings in specimens from female genital organs, unspecified
MF70-MF7Z
Clinical findings in specimens from male genital organs
MF70Abnormal level of enzymes in specimens from male genital organs
MF71Abnormal level of hormones in specimens from male genital organs
MF72Abnormal level of drugs, medicaments and biological substances in specimens from male genital organs
MF73Abnormal level of substances chiefly nonmedicinal as to source in specimens from male genital organs
MF74Abnormal immunological findings in specimens from male genital organs
MF75Abnormal microbiological findings in specimens from male genital organs
MF76Abnormal cytological findings in specimens from male genital organs
MF77Abnormal histological findings in specimens from male genital organs
MF78Abnormal chromosomal findings in specimens from male genital organs
MF7YOther specified clinical findings in specimens from male genital organs
MF7ZClinical findings in specimens from male genital organs, unspecified
MF80-MF8Z
Clinical findings in specimens from the urinary system
MF80Diffuse mesangial sclerosis
MF81Fibronectin glomerulopathy
MF82Lipoprotein glomerulopathy
MF83Diabetic glomerular changes
MF84Pauci-immune proliferative glomerulonephritis
MF85Anti-glomerular basement membrane antibody mediated disease
MF8YOther specified clinical findings in specimens from the urinary system
MF8ZClinical findings in specimens from the urinary system, unspecified
MF90-MF9Y
Clinical findings on examination of urine, without diagnosis
MF90Acetonuria
MF91Bilirubinuria
MF92Chyluria
MF93Glycosuria
MF94Haemoglobinuria
MF95Myoglobinuria
MF96Proteinuria
MF97Pyuria
MF98Abnormal levels of serum electrolytes in the urine
MF99Elevated urine levels of drugs, medicaments and biological substances
MF9AAbnormal urine levels of substances chiefly nonmedicinal as to source
MF9BAbnormal findings on microbiological examination of urine
MF9CAbnormal findings on cytological and histological examination of urine
MF9YOther specified clinical findings on examination of urine, without diagnosis
MG20-MG4Y
General symptoms
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
MG40Shock
MG41Sleep disturbance, not elsewhere classified
MG42Somnolence, not elsewhere classified
MG43Symptoms or signs concerning food or fluid intake
MG44Symptoms peculiar to infancy
MG45Syncope or collapse
MG46Systemic inflammatory response syndrome of noninfectious origin
MG47Toxicosis not further specified
MG48Unknown or unspecified causes of morbidity
MG49Hangover
MG4AMulti organ failure
MG4YOther specified general symptoms
MG30-MG3Z
Pain
MG50-MG5Z
Finding of microorganism resistant to antimicrobial drugs
MG50Finding of gram negative bacteria resistant to antimicrobial drugs
MG51Finding of gram positive bacteria resistant to antimicrobial drugs
MG52Finding of bacteria, neither gram negative nor positive, resistant to antimicrobial drugs
MG53Finding of virus resistant to antimicrobial drugs
MG54Finding of fungus resistant to antimicrobial drugs
MG55Finding of parasite resistant to antimicrobial drugs
MG56Finding of microorganism resistant to other multiple antimicrobial drugs
MG5YFinding of other microorganism resistant to antimicrobial drugs
MG5ZFinding of microorganism resistant to antimicrobial drugs, unspecified
MG60-MG6Y
Clinical findings in specimens from other specified organs, systems and tissues
MG60Abnormal level of enzymes in specimens from other organs, systems and tissues
MG61Abnormal level of hormones in specimens from other organs, systems and tissues
MG62Abnormal level of drugs, medicaments and biological substances in specimens from other organs, systems and tissues
MG63Abnormal level of substances chiefly nonmedicinal as to source in specimens from other organs, systems and tissues
MG64Abnormal immunological findings in specimens from other organs, systems and tissues
MG65Abnormal microbiological findings in specimens from other organs, systems and tissues
MG66Abnormal cytological findings in specimens from other organs, systems and tissues
MG67Abnormal histological findings in specimens from other organs, systems and tissues
MG6YOther specified clinical findings in specimens from other specified organs, systems and tissues
MG70-MG7Z
Abnormal results, not elsewhere classified
MG70Abnormal diagnostic imaging results not elsewhere classified
MG71Abnormal laboratory results, not elsewhere classified
MG72Abnormal results of function studies of other organs and systems
MG7YOther specified abnormal results, not elsewhere classified
MG7ZAbnormal results, not elsewhere classified, unspecified
MH10-MH15
Ill-defined and unknown causes of mortality
Frequently Asked Questions
What ICD-11 codes are in Chapter 21?
Chapter 21: Symptoms, Signs or Clinical Findings, Not Elsewhere Classified covers ICD-11 codes MA00-MH2Z. It contains 44 code blocks with 308 top-level categories.
What conditions does ICD-11 Chapter 21 cover?
Covers symptoms and signs that do not yet have a definitive diagnosis, including chest pain, abdominal pain, fever, cough, headache, fatigue, and abnormal lab results. These codes are commonly used when a workup is still in progress. This chapter includes codes from MA00-MH2Z.
How is ICD-11 Chapter 21 different from ICD-10?
ICD-11 reorganized many chapters compared to ICD-10. Chapter 21 (Symptoms, Signs or Clinical Findings, Not Elsewhere Classified) may include conditions that were in different ICD-10 chapters, and some conditions previously here may have moved. ICD-11 also adds new chapters for sleep-wake disorders, sexual health, and traditional medicine that did not exist in ICD-10.
How many code blocks are in ICD-11 Chapter 21?
Chapter 21 has 44 code blocks: MA00-MA0Y (Symptoms or signs of blood, blood-forming organs, or the immune system), MA10-MA1Y (Clinical findings in blood, blood-forming organs, or the immune system), MA50-MA51 (Results of function studies of the endocrine, nutritional or metabolic diseases), MA50-MA6Y (Symptoms, signs or clinical findings of endocrine, nutritional or metabolic diseases), and 40 more.
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