B4 — Functions of the Cardiovascular, Haematological, Immunological and Respiratory Systems
bPart of Body Functions
Categories (16)
b410Heart functions
b415Blood vessel functions
b420Blood pressure functions
b429Functions of the cardiovascular system, other specified and unspecified
b430Haematological system functions
b435Immunological system functions
b439Functions of the haematological and immunological systems, other specified and unspecified
b440Respiration functions
b445Respiratory muscle functions
b449Functions of the respiratory system, other specified and unspecified
b450Additional functions of the respiratory system
b455Exercise tolerance functions
b460Sensations associated with cardiovascular and respiratory functions
b469Additional functions and sensations of the cardiovascular and respiratory systems, other specified and unspecified
b498Other specified functions of the cardiovascular, haematological, immunological and respiratory systems
b499Functions of the cardiovascular, haematological, immunological and respiratory systems, unspecified
All Codes in This Chapter (74)
b410Heart functions
b4100Heart rate
b4101Heart rhythm
b4102Contraction force of ventricular muscles
b4103Blood supply to the heart
b4108Other specified heart functions
b4109Heart functions, unspecified
b415Blood vessel functions
b4150Functions of arteries
b4151Functions of capillaries
b4152Functions of veins
b4158Other specified blood vessel functions
b4159Blood vessel functions, unspecified
b420Blood pressure functions
b4200Increased blood pressure
b4201Decreased blood pressure
b4202Maintenance of blood pressure
b4208Other specified blood pressure functions
b4209Blood pressure functions, unspecified
b429Functions of the cardiovascular system, other specified and unspecified
b430Haematological system functions
b4300Production of blood
b4301Oxygen-carrying functions of the blood
b4302Metabolite-carrying functions of the blood
b4303Clotting functions
b4308Other specified haematological system functions
b4309Haematological system functions, unspecified
b435Immunological system functions
b4350Immune response
b43500Specific immune response
b43501Non-specific immune response
b43508Other specified immune response
b43509Immune response, unspecified
b4351Hypersensitivity reactions
b4352Functions of lymphatic vessels
b4353Functions of lymph nodes
b4358Other specified immunological system functions
b4359Immunological system functions, unspecified
b439Functions of the haematological and immunological systems, other specified and unspecified
b440Respiration functions
b4400Respiration rate
b4401Respiratory rhythm
b4402Depth of respiration
b4408Other specified respiration functions
b4409Respiration functions, unspecified
b445Respiratory muscle functions
b4450Functions of the thoracic respiratory muscles
b4451Functions of the diaphragm
b4452Functions of accessory respiratory muscles
b4458Other specified respiratory muscle functions
b4459Respiratory muscle functions, unspecified
b449Functions of the respiratory system, other specified and unspecified
b450Additional functions of the respiratory system
b4500Functions of breathing through the mouth
b4501Functions of coughing
b4502Functions of sneezing
b4503Functions of yawning
b4504Functions related to mucus
b45040Production of mucus
b45041Transportation of mucus
b45048Other specified functions related to mucus
b45049Functions related to mucus, unspecified
b4508Other specified additional functions of the respiratory system
b4509Additional functions of the respiratory system, unspecified
b455Exercise tolerance functions
b4550General physical endurance
b4551Aerobic capacity
b4552Fatiguability
b4558Other specified exercise tolerance functions
b4559Exercise tolerance functions, unspecified
b460Sensations associated with cardiovascular and respiratory functions
b469Additional functions and sensations of the cardiovascular and respiratory systems, other specified and unspecified
b498Other specified functions of the cardiovascular, haematological, immunological and respiratory systems
b499Functions of the cardiovascular, haematological, immunological and respiratory systems, unspecified
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