ICD-10 Chapter R

(R00-R09) Circulatory and respiratory systems

 * Abnormalities of heart beat
 * Tachycardia, unspecified
 * Bradycardia, unspecified
 * Palpitations
 * Other and unspecified abnormalities of heart beat
 * Cardiac murmurs and other cardiac sounds
 * Benign and innocent cardiac murmurs
 * Cardiac murmur, unspecified
 * Other cardiac sounds
 * Gangrene, not elsewhere classified
 * Abnormal blood-pressure reading, without diagnosis
 * Elevated blood-pressure reading, without diagnosis of hypertension
 * Nonspecific low blood-pressure reading
 * Haemorrhage from respiratory passages
 * Epistaxis
 * Haemorrhage from throat
 * Haemoptysis
 * Haemorrhage from other sites in respiratory passages
 * Haemorrhage from respiratory passages, unspecified
 * Cough
 * Abnormalities of breathing
 * Dyspnoea
 * Orthopnoea
 * Stridor
 * Wheezing
 * Periodic breathing
 * Cheyne-Stokes respiration
 * Hyperventilation
 * Mouth breathing
 * Snoring
 * Hiccough
 * Sneezing
 * Other and unspecified abnormalities of breathing
 * Choking sensation
 * Pain in throat and chest
 * Pain in throat
 * Chest pain on breathing
 * Precordial pain
 * Other chest pain
 * Chest pain, unspecified
 * Other symptoms and signs involving the circulatory and respiratory systems
 * Asphyxia
 * Pleurisy
 * Respiratory arrest
 * Abnormal sputum
 * Other specified symptoms and signs involving the circulatory and respiratory systems
 * Rales
 * Arterial Bruit

(R10-R19) Digestive system and abdomen

 * Abdominal and pelvic pain
 * Acute abdomen
 * Pain localized to upper abdomen
 * Pelvic and perineal pain
 * Pain localized to other parts of lower abdomen
 * Other and unspecified abdominal pain
 * Nausea and vomiting
 * Heartburn
 * Dysphagia
 * Flatulence and related conditions
 * Eructation
 * Faecal incontinence
 * Encopresis
 * Hepatomegaly and splenomegaly, not elsewhere classified
 * Hepatomegaly, not elsewhere classified
 * Splenomegaly, not elsewhere classified
 * Hepatomegaly with splenomegaly, not elsewhere classified
 * Hepatosplenomegaly NOS


 * Unspecified jaundice
 * Ascites
 * Other symptoms and signs involving the digestive system and abdomen
 * Intra-abdominal and pelvic swelling, mass and lump
 * Abnormal bowel sounds
 * Visible peristalsis
 * Abdominal rigidity
 * Change in bowel habit
 * Other faecal abnormalities
 * Halitosis
 * Other specified symptoms and signs involving the digestive system and abdomen

(R20-R23) Skin and subcutaneous tissue

 * Disturbances of skin sensation
 * Anaesthesia of skin
 * Hypoaesthesia of skin
 * Paraesthesia of skin
 * Hyperaesthesia
 * Other and unspecified disturbances of skin sensation
 * Rash and other nonspecific skin eruption
 * Localized swelling, mass and lump of skin and subcutaneous tissue
 * Other skin changes
 * Cyanosis
 * Pallor
 * Flushing
 * Spontaneous ecchymoses
 * Petechiae
 * Changes in skin texture
 * Desquamation
 * Induration
 * Other and unspecified skin changes

(R25-R29) Nervous and musculoskeletal systems

 * Abnormal involuntary movements
 * Abnormal head movements
 * Tremor, unspecified
 * Cramp and spasm
 * Fasciculation
 * Other and unspecified abnormal involuntary movements
 * Abnormalities of gait and mobility
 * Ataxic gait
 * Paralytic gait
 * Difficulty in walking, not elsewhere classified
 * Other and unspecified abnormalities of gait and mobility
 * Other lack of coordination
 * Ataxia, unspecified
 * Other and unspecified lack of coordination
 * Other symptoms and signs involving the nervous and musculoskeletal systems
 * Tetany
 * Meningismus
 * Abnormal reflex
 * Hyperreflexia
 * Abnormal posture
 * Clicking hip
 * Other and unspecified symptoms and signs involving the nervous and musculoskeletal systems

(R30-R39) Urinary system

 * Pain associated with micturition
 * Dysuria
 * Vesical tenesmus
 * Painful micturition, unspecified
 * Unspecified haematuria
 * Unspecified urinary incontinence
 * Retention of urine
 * Anuria and oliguria
 * Polyuria
 * Nocturia
 * Urethral discharge
 * Other symptoms and signs involving the urinary system
 * Extravasation of urine
 * Other difficulties with micturition
 * Extrarenal uraemia
 * Other and unspecified symptoms and signs involving the urinary system

(R40-R46) Cognition, perception, emotional state and behaviour

 * Somnolence, stupor and coma
 * Somnolence
 * Stupor
 * Coma, unspecified
 * Other symptoms and signs involving cognitive functions and awareness
 * Disorientation, unspecified
 * Anterograde amnesia
 * Retrograde amnesia
 * Other amnesia
 * Other and unspecified symptoms and signs involving cognitive functions and awareness
 * Dizziness and giddiness
 * Vertigo NOS
 * Disturbances of smell and taste
 * Anosmia
 * Parosmia
 * Parageusia
 * Other and unspecified disturbances of smell and taste
 * Other symptoms and signs involving general sensations and perceptions
 * Auditory hallucinations
 * Visual hallucinations
 * Other hallucinations
 * Hallucinations, unspecified
 * Other and unspecified symptoms and signs involving general sensations and perceptions
 * Symptoms and signs involving emotional state
 * Nervousness
 * Restlessness and agitation
 * Unhappiness
 * Demoralization and apathy
 * Irritability and anger
 * Hostility
 * Physical violence
 * State of emotional shock and stress, unspecified
 * Other symptoms and signs involving emotional state
 * Symptoms and signs involving appearance and behaviour
 * Very low level of personal hygiene
 * Bizarre personal appearance
 * Strange and inexplicable behaviour
 * Overactivity
 * Slowness and poor responsiveness
 * Suspiciousness and marked evasiveness
 * Undue concern and preoccupation with stressful events
 * Verbosity and circumstantial detail obscuring reason for contact
 * Other symptoms and signs involving appearance and behaviour

(R47-R49) Speech and voice

 * Speech disturbances, not elsewhere classified
 * Dysphasia and aphasia
 * Dysarthria and anarthria
 * Other and unspecified speech disturbances


 * Dyslexia and other symbolic dysfunctions, not elsewhere classified
 * Dyslexia and alexia
 * Agnosia
 * Apraxia
 * Other and unspecified symbolic dysfunctions
 * Acalculia
 * Agraphia


 * Voice disturbances
 * Dysphonia
 * Aphonia
 * Hypernasality and hyponasality
 * Other and unspecified voice disturbances

(R50-R69) General symptoms and signs

 * Fever of unknown origin
 * Fever with chills
 * Persistent fever
 * Fever, unspecified


 * Headache


 * Pain, not elsewhere classified
 * Acute pain
 * Chronic intractable pain
 * Other chronic pain
 * Pain, unspecified


 * Malaise and fatigue


 * Senility


 * Syncope and collapse


 * Convulsions, not elsewhere classified
 * Febrile convulsions
 * Other and unspecified convulsions


 * Shock, not elsewhere classified
 * Cardiogenic shock
 * Hypovolaemic shock
 * Other shock
 * Shock, unspecified


 * Haemorrhage, not elsewhere classified


 * Enlarged lymph nodes
 * Localized enlarged lymph nodes
 * Generalized enlarged lymph nodes
 * Lymphadenopathy NOS


 * Oedema, not elsewhere classified
 * Localized oedema
 * Peripheral edema
 * Generalized oedema
 * Oedema, unspecified


 * Hyperhidrosis
 * Localized hyperhidrosis
 * Generalized hyperhidrosis
 * Hyperhidrosis, unspecified
 * Night sweats


 * Lack of expected normal physiological development
 * Delayed milestone
 * Other lack of expected normal physiological development
 * Lack of growth
 * Lack of expected normal physiological development, unspecified


 * Symptoms and signs concerning food and fluid intake
 * Anorexia
 * Polydipsia
 * Polyphagia
 * Feeding difficulties and mismanagement
 * Abnormal weight loss
 * Abnormal weight gain
 * Other symptoms and signs concerning food and fluid intake


 * Cachexia


 * Other general symptoms and signs
 * Hypothermia, not associated with low environmental temperature
 * Nonspecific symptoms peculiar to infancy
 * Dry mouth, unspecified
 * Clubbing of fingers
 * Other specified general symptoms and signs


 * Unknown and unspecified causes of morbidity

(R70-R79) On examination of blood, without diagnosis

 * Elevated erythrocyte sedimentation rate and abnormality of plasma viscosity
 * Elevated erythrocyte sedimentation rate
 * Abnormal plasma viscosity


 * Abnormality of red blood cells
 * Anisocytosis
 * Poikilocytosis


 * Abnormality of white blood cells, not elsewhere classified


 * Elevated blood glucose level
 * Abnormal glucose tolerance test
 * Impaired glucose tolerance
 * Prediabetes
 * Hyperglycaemia, unspecified


 * Abnormal serum enzyme levels
 * Elevation of levels of transaminase and lactic acid dehydrogenase (LDH)]]
 * Abnormal levels of other serum enzymes
 * acid phosphatase
 * alkaline phosphatase
 * amylase
 * lipase (triacylglycerol lipase)
 * Abnormal level of unspecified serum enzyme


 * Laboratory evidence of human immunodeficiency virus (HIV)


 * Other abnormal immunological findings in serum
 * Raised antibody titre
 * Abnormal reaction to tuberculin test
 * False-positive serological test for syphilis
 * Other specified abnormal immunological findings in serum
 * Abnormal immunological finding in serum, unspecified


 * Other abnormalities of plasma proteins
 * Abnormality of albumin
 * Abnormality of globulin
 * Abnormality of alphafetoprotein
 * Other specified abnormalities of plasma proteins
 * Abnormality of plasma protein, unspecified


 * Findings of drugs and other substances, not normally found in blood
 * Finding of alcohol in blood
 * Finding of opiate drug in blood
 * Finding of cocaine in blood
 * Finding of hallucinogen in blood
 * Finding of other drugs of addictive potential in blood
 * Finding of psychotropic drug in blood
 * Finding of steroid agent in blood
 * Finding of abnormal level of heavy metals in blood
 * Finding of other specified substances, not normally found in blood
 * Finding of unspecified substance, not normally found in blood


 * Other abnormal findings of blood chemistry
 * Abnormal level of blood mineral
 * Other specified abnormal findings of blood chemistry
 * Abnormal blood-gas level
 * Abnormal finding of blood chemistry, unspecified

(R80-R82) On examination of urine, without diagnosis

 * Isolated proteinuria
 * Albuminuria
 * Glycosuria
 * Other abnormal findings in urine
 * Chyluria
 * Myoglobinuria
 * Biliuria
 * Haemoglobinuria
 * Acetonuria
 * Ketonuria
 * Elevated urine levels of drugs, medicaments and biological substances
 * Abnormal urine levels of substances chiefly nonmedicinal as to source
 * Abnormal findings on microbiological examination of urine
 * Abnormal findings on cytological and histological examination of urine
 * Other and unspecified abnormal findings in urine
 * Cells and casts in urine
 * Crystalluria
 * Melanuria

(R83-R89) On examination of other body fluids, substances and tissues, without diagnosis

 * Abnormal findings in cerebrospinal fluid
 * Abnormal findings in specimens from respiratory organs and thorax
 * Abnormal findings in specimens from digestive organs and abdominal cavity
 * Abnormal findings in specimens from male genital organs
 * Abnormal findings in specimens from female genital organs
 * Abnormal findings in specimens from other organs, systems and tissues

(R90-R94) On diagnostic imaging and in function studies, without diagnosis

 * Abnormal findings on diagnostic imaging of central nervous system
 * Intracranial space-occupying lesion
 * Other abnormal findings on diagnostic imaging of central nervous system
 * Abnormal findings on diagnostic imaging of lung
 * Abnormal findings on diagnostic imaging of breast
 * Abnormal findings on diagnostic imaging of other body structures
 * Abnormal findings on diagnostic imaging of skull and head, not elsewhere classified
 * Abnormal findings on diagnostic imaging of heart and coronary circulation
 * Abnormal findings on diagnostic imaging of liver and biliary tract
 * Abnormal findings on diagnostic imaging of other parts of digestive tract
 * Abnormal findings on diagnostic imaging of urinary organs
 * Abnormal findings on diagnostic imaging of other abdominal regions, including retroperitoneum
 * Abnormal findings on diagnostic imaging of limbs
 * Abnormal findings on diagnostic imaging of other parts of musculoskeletal system
 * Abnormal findings on diagnostic imaging of other specified body structures
 * Abnormal results of function studies
 * Abnormal results of function studies of central nervous system
 * Abnormal electroencephalogram
 * Abnormal results of function studies of peripheral nervous system and special senses
 * Abnormal results of pulmonary function studies
 * Reduced vital capacity
 * Abnormal results of cardiovascular function studies
 * Abnormal electrocardiogram
 * Abnormal results of kidney function studies
 * Abnormal renal function test
 * Abnormal results of liver function studies
 * Abnormal results of thyroid function studies
 * Abnormal results of other endocrine function studies
 * Abnormal results of function studies of other organs and systems
 * Abnormal basal metabolic rate (BMR)

R95-R99 - Ill-defined and unknown causes of mortality

 * Sudden infant death syndrome
 * Other sudden death, cause unknown
 * Instantaneous death
 * Death occurring less than 24 hours from onset of symptoms, not otherwise explained
 * Unattended death
 * Other ill-defined and unspecified causes of mortality