Chapter XVIII

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
(R00-R99)

Symptoms and signs involving the circulatory and respiratory systems
(R00-R09)


R00	Abnormalities of heart beat
	Excludes:	abnormalities originating in the perinatal period ( P29.1 ) specified arrhythmias ( I47-I49 )
R00.0	Tachycardia, unspecified
	Rapid heart beat Tachycardia: · sinoauricular NOS · sinus [sinusal] NOS
R00.1	Bradycardia, unspecified
	Bradycardia: · sinoatrial · sinus · vagal Slow heart beat
	Use additional external cause code (Chapter XX), if desired, to identify drug, if drug-induced.
R00.2	Palpitations
	Awareness of heart beat
R00.8	Other and unspecified abnormalities of heart beat


R01	Cardiac murmurs and other cardiac sounds
	Excludes:	those originating in the perinatal period ( P29.8 )
R01.0	Benign and innocent cardiac murmurs
	Functional cardiac murmur
R01.1	Cardiac murmur, unspecified
	Cardiac bruit NOS
R01.2	Other cardiac sounds
	Cardiac dullness, increased or decreased Precordial friction


R02	Gangrene, not elsewhere classified
	Excludes:	gangrene in: · atherosclerosis ( I70.2 ) · diabetes mellitus ( E10-E14 with common fourth character .5) · other peripheral vascular diseases ( I73.- ) gangrene of certain specified sites - see Alphabetical Index gas gangrene ( A48.0 ) pyoderma gangrenosum ( L88 )


R03	Abnormal blood-pressure reading, without diagnosis
R03.0	Elevated blood-pressure reading, without diagnosis of hypertension
	Note:	This category is to be used to record an episode of elevated blood pressure in a patient in whom no formal diagnosis of hypertension has been made, or as an isolated incidental finding.
R03.1	Nonspecific low blood-pressure reading
	Excludes:	hypotension ( I95.- ) · neurogenic orthostatic ( G90.3 ) maternal hypotension syndrome ( O26.5 )


R04	Haemorrhage from respiratory passages
R04.0	Epistaxis
	Haemorrhage from nose Nosebleed
R04.1	Haemorrhage from throat
	Excludes:	haemoptysis ( R04.2 )
R04.2	Haemoptysis
	Blood-stained sputum Cough with haemorrhage
R04.8	Haemorrhage from other sites in respiratory passages
	Pulmonary haemorrhage NOS
	Excludes:	perinatal pulmonary haemorrhage ( P26.- )
R04.9	Haemorrhage from respiratory passages, unspecified


R05	Cough
	Excludes:	cough with haemorrhage ( R04.2 ) psychogenic cough ( F45.3 )


R06	Abnormalities of breathing
	Excludes:	respiratory: · arrest ( R09.2 ) · distress (syndrome)(of): · adult ( J80 ) · newborn ( P22.- ) · failure ( J96.- ) · of newborn ( P28.5 )
R06.0	Dyspnoea
	Orthopnoea Shortness of breath
	Excludes:	transient tachypnoea of newborn ( P22.1 )
R06.1	Stridor
	Excludes:	congenital laryngeal stridor ( P28.8 ) laryngismus (stridulus) ( J38.5 )
R06.2	Wheezing
R06.3	Periodic breathing
	Cheyne-Stokes breathing
R06.4	Hyperventilation
	Excludes:	psychogenic hyperventilation ( F45.3 )
R06.5	Mouth breathing
	Snoring
	Excludes:	dry mouth NOS ( R68.2 )
R06.6	Hiccough
	Excludes:	psychogenic hiccough ( F45.3 )
R06.7	Sneezing
R06.8	Other and unspecified abnormalities of breathing
	Apnoea NOS Breath-holding (spells) Choking sensation Sighing
	Excludes:	apnoea (of): · newborn ( P28.4 ) · sleep ( G47.3 ) · newborn (primary) ( P28.3 )


R07	Pain in throat and chest
	Excludes:	dysphagia ( R13 ) epidemic myalgia ( B33.0 ) pain in: · breast ( N64.4 ) · neck ( M54.2 ) sore throat (acute) NOS ( J02.9 )
R07.0	Pain in throat
R07.1	Chest pain on breathing
	Painful respiration
R07.2	Precordial pain
R07.3	Other chest pain
	Anterior chest-wall pain NOS
R07.4	Chest pain, unspecified


R09	Other symptoms and signs involving the circulatory and respiratory systems
	Excludes:	respiratory: · distress (syndrome)(of): · adult ( J80 ) · newborn ( P22.- ) · failure ( J96.- ) · newborn ( P28.5 )
R09.0	Asphyxia
	Excludes:	asphyxia (due to): · birth ( P21.- ) · carbon monoxide ( T58 ) · foreign body in respiratory tract ( T17.- ) · intrauterine ( P20.- ) · traumatic ( T71 )
R09.1	Pleurisy
	Excludes:	pleurisy with effusion ( J90 )
R09.2	Respiratory arrest
	Cardiorespiratory failure
R09.3	Abnormal sputum
	Abnormal: · amount · colour · odour Excessive		} } } } }	(of) sputum
	Excludes:	blood-stained sputum ( R04.2 )
R09.8	Other specified symptoms and signs involving the circulatory and respiratory systems
	Bruit (arterial) Chest: · abnormal percussion · friction sounds · tympany Rales Weak pulse