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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

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

MB40-MB6Y

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

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

MC80-MC9Y

Symptoms, signs or clinical findings of the circulatory system

MD10-MD3Y

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

ME20-ME2Y

Clinical findings in the digestive system

ME60-ME6Y

Symptoms, signs or clinical findings 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

MF30-MF3Y

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

MF60-MF6Z

Clinical findings in specimens from female genital organs

MF70-MF7Z

Clinical findings in specimens from male genital organs

MF80-MF8Z

Clinical findings in specimens from the urinary system

MF90-MF9Y

Clinical findings on examination of urine, without diagnosis

MG20-MG4Y

General symptoms

MG30-MG3Z

Pain

MG50-MG5Z

Finding of microorganism resistant to antimicrobial drugs

MG60-MG6Y

Clinical findings in specimens from other specified organs, systems and tissues

MG70-MG7Z

Abnormal results, not elsewhere classified

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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