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

General symptoms and signs
(R50-R69)

R50 Fever of other and unknown origin
Excludes: fever of unknown origin (during)(in):
· labour ( O75.2 )
· newborn ( P81.9 )
puerperal pyrexia NOS ( O86.4 )
R50.2 Drug-induced fever
Use additional external cause code (Chapter XX), if desired, to identify drug.
R50.8 Other specified fever
Fever with chills
Fever with rigors
Persistent fever
R50.9 Fever, unspecified
Hyperpyrexia NOS
Pyrexia NOS
Excludes: malignant hyperthermia due to anaesthesia ( T88.3 )

R51 Headache
Facial pain NOS
Excludes: atypical facial pain ( G50.1 )
migraine and other headache syndromes ( G43-G44 )
trigeminal neuralgia ( G50.0 )

R52 Pain, not elsewhere classified
Includes: pain not referable to any one organ or body region
Excludes: chronic pain personality syndrome ( F62.8 )
headache ( R51 )
pain (in):
· abdomen ( R10.- )
· back ( M54.9 )
· breast ( N64.4 )
· chest ( R07.1-R07.4 )
· ear ( H92.0 )
· eye ( H57.1 )
· joint ( M25.5 )
· limb ( M79.6 )
· lumbar region ( M54.5 )
· pelvic and perineal ( R10.2 )
· psychogenic ( F45.4 )
· shoulder ( M75.8 )
· spine ( M54.- )
· throat ( R07.0 )
· tongue ( K14.6 )
· tooth ( K08.8 )
renal colic ( N23 )
R52.0 Acute pain
R52.1 Chronic intractable pain
R52.2 Other chronic pain
R52.9 Pain, unspecified
Generalized pain NOS

R53 Malaise and fatigue
Asthenia NOS
Debility:
· NOS
· chronic
· nervous
General physical deterioration
Lethargy
Tiredness
Excludes: debility:
· congenital ( P96.9 )
· senile ( R54 )
exhaustion and fatigue (due to)(in):
· combat ( F43.0 )
· excessive exertion ( T73.3 )
· exposure ( T73.2 )
· heat ( T67.- )
· neurasthenia ( F48.0 )
· pregnancy ( O26.8 )
· senile asthenia ( R54 )
fatigue syndrome ( F48.0 )
· postviral ( G93.3 )

R54 Senility
Old age
Senescence
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without mention of psychosis
Senile:
· asthenia
· debility
Excludes: senile psychosis ( F03 )

R55 Syncope and collapse
Blackout
Fainting
Excludes: neurocirculatory asthenia ( F45.3 )
orthostatic hypotension ( I95.1 )
neurogenic orthostatic hypotension ( G90.3 )
shock:
· NOS ( R57.9 )
· cardiogenic ( R57.0 )
· complicating or following:
  · abortion or ectopic or molar pregnancy ( O00-O07 , O08.3 )
  · labour and delivery ( O75.1 )
· postoperative ( T81.1 )
Stokes-Adams attack ( I45.9 )
syncope:
· carotid sinus ( G90.0 )
· heat ( T67.1 )
· psychogenic ( F48.8 )
unconsciousness NOS ( R40.2 )

R56 Convulsions, not elsewhere classified
Excludes: convulsions and seizures (in):
· dissociative ( F44.5 )
· epilepsy ( G40-G41 )
· newborn ( P90 )
R56.0 Febrile convulsions
R56.8 Other and unspecified convulsions
Fit NOS
Seizure (convulsive) NOS

R57 Shock, not elsewhere classified
Excludes: shock (due to):
· anaesthesia ( T88.2 )
· anaphylactic (due to):
  · NOS ( T78.2 )
  · adverse food reaction ( T78.0 )
  · serum ( T80.5 )
· complicating or following abortion or ectopic or molar pregnancy ( O00-O07 , O08.3 )
· electric ( T75.4 )
· lightning ( T75.0 )
· obstetric ( O75.1 )
· postoperative ( T81.1 )
· psychic ( F43.0 )
· septic ( A41.9 )
· traumatic ( T79.4 )
toxic shock syndrome ( A48.3 )
R57.0 Cardiogenic shock
R57.1 Hypovolaemic shock
R57.8 Other shock
Endotoxic shock
R57.9 Shock, unspecified
Failure of peripheral circulation NOS

R58 Haemorrhage, not elsewhere classified
Haemorrhage NOS

R59 Enlarged lymph nodes
Includes: swollen glands
Excludes: lymphadenitis:
· NOS ( I88.9 )
· acute ( L04.- )
· chronic ( I88.1 )
· mesenteric (acute)(chronic) ( I88.0 )
R59.0 Localized enlarged lymph nodes
R59.1 Generalized enlarged lymph nodes
Lymphadenopathy NOS
Excludes: HIV disease resulting in (persistent) generalized lymphadenopathy ( B23.1 )
R59.9 Enlarged lymph nodes, unspecified

R60 Oedema, not elsewhere classified
Excludes: ascites ( R18 )
hydrops fetalis NOS ( P83.2 )
hydrothorax ( J94.8 )
oedema (of):
· angioneurotic ( T78.3 )
· cerebral ( G93.6 )
  · due to birth injury ( P11.0 )
· gestational ( O12.0 )
· hereditary ( Q82.0 )
· larynx ( J38.4 )
· malnutrition ( E40-E46 )
· nasopharynx ( J39.2 )
· newborn ( P83.3 )
· pharynx ( J39.2 )
· pulmonary ( J81 )
R60.0 Localized oedema
R60.1 Generalized oedema
R60.9 Oedema, unspecified
Fluid retention NOS

R61 Hyperhidrosis
R61.0 Localized hyperhidrosis
R61.1 Generalized hyperhidrosis
R61.9 Hyperhidrosis, unspecified
Excessive sweating
Night sweats

R62 Lack of expected normal physiological development
Excludes: delayed puberty ( E30.0 )
R62.0 Delayed milestone
Delayed attainment of expected physiological developmental stage
Late:
· talker
· walker
R62.8 Other lack of expected normal physiological development
Failure to:
· gain weight
· thrive
Infantilism NOS
Lack of growth
Physical retardation
Excludes: HIV disease resulting in failure to thrive ( B22.2 )
physical retardation due to malnutrition ( E45 )
R62.9 Lack of expected normal physiological development, unspecified

R63 Symptoms and signs concerning food and fluid intake
Excludes: bulimia NOS ( F50.2 )
eating disorders of nonorganic origin ( F50.- )
malnutrition ( E40-E46 )
R63.0 Anorexia
Loss of appetite
Excludes: anorexia nervosa ( F50.0 )
loss of appetite of nonorganic origin ( F50.8 )
R63.1 Polydipsia
Excessive thirst
R63.2 Polyphagia
Excessive eating
Hyperalimentation NOS
R63.3 Feeding difficulties and mismanagement
Feeding problem NOS
Excludes: feeding problems of newborn ( P92.- )
infant feeding disorder of nonorganic origin ( F98.2 )
R63.4 Abnormal weight loss
R63.5 Abnormal weight gain
Excludes: excessive weight gain in pregnancy ( O26.0 )
obesity ( E66.- )
R63.8 Other symptoms and signs concerning food and fluid intake

R64 Cachexia
Excludes: HIV disease resulting in wasting syndrome ( B22.2 )
malignant cachexia ( C80 )
nutritional marasmus ( E41 )

R68 Other general symptoms and signs
R68.0 Hypothermia, not associated with low environmental temperature
Excludes: hypothermia (due to)(of):
· NOS (accidental) ( T68 )
· anaesthesia ( T88.5 )
· low environmental temperature ( T68 )
· newborn ( P80.- )
R68.1 Nonspecific symptoms peculiar to infancy
Excessive crying of infant
Irritable infant
Excludes: neonatal cerebral irritability ( P91.3 )
teething syndrome ( K00.7 )
R68.2 Dry mouth, unspecified
Excludes: dry mouth due to:
· dehydration ( E86 )
· sicca syndrome [Sjögren] ( M35.0 )
salivary gland hyposecretion ( K11.7 )
R68.3 Clubbing of fingers
Clubbing of nails
Excludes: congenital clubfinger ( Q68.1 )
R68.8 Other specified general symptoms and signs

R69 Unknown and unspecified causes of morbidity
Illness NOS
Undiagnosed disease, not specified as to the site or system involved