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

Abnormal findings on examination of blood, without diagnosis
(R70-R79)

Excludes: abnormalities (of)(on):
· antenatal screening of mother ( O28.- )
· coagulation ( D65-D68 )
· lipids ( E78.- )
· platelets and thrombocytes ( D69.- )
· white blood cells classified elsewhere ( D70-D72 )
diagnostic abnormal findings classified elsewhere - see Alphabetical Index
haemorrhagic and haematological disorders of fetus and newborn ( P50-P61 )

R70 Elevated erythrocyte sedimentation rate and abnormality of plasma viscosity
R70.0 Elevated erythrocyte sedimentation rate
R70.1 Abnormal plasma viscosity

R71 Abnormality of red blood cells
Abnormal red-cell:
· morphology NOS
· volume NOS
Anisocytosis
Poikilocytosis
Excludes: anaemias ( D50-D64 )
polycythaemia:
· benign (familial) ( D75.0 )
· neonatorum ( P61.1 )
· secondary ( D75.1 )
· vera ( D45 )

R72 Abnormality of white blood cells, not elsewhere classified
Abnormal leukocyte differential NOS
Excludes: leukocytosis ( D72.8 )

R73 Elevated blood glucose level
Excludes: diabetes mellitus ( E10-E14)
· in pregnancy, childbirth and the puerperium ( O24.-)
neonatal disorders ( P70.0-P70.2)
postsurgical hypoinsulinaemia ( E89.1)
R73.0 Abnormal glucose tolerance test
Diabetes:
· chemical
· latent
Impaired glucose tolerance
Prediabetes
#R73.1 Impaired fasting glucose
R73.9 Hyperglycaemia, unspecified

R74 Abnormal serum enzyme levels
R74.0 Elevation of levels of transaminase and lactic acid dehydrogenase [LDH]
R74.8 Abnormal levels of other serum enzymes
Abnormal level of:
· acid phosphatase
· alkaline phosphatase
· amylase
· lipase [triacylglycerol lipase]
R74.9 Abnormal level of unspecified serum enzyme

R75 Laboratory evidence of human immunodeficiency virus [HIV]
Nonconclusive HIV-test finding in infants
Excludes: asymptomatic human immunodeficiency virus [HIV] infection status ( Z21 )
human immunodeficiency virus [HIV] disease ( B20-B24 )

R76 Other abnormal immunological findings in serum
R76.0 Raised antibody titre
Excludes: isoimmunization, in pregnancy ( O36.0-O36.1 )
· affecting fetus or newborn ( P55.- )
R76.1 Abnormal reaction to tuberculin test
Abnormal result of Mantoux test
R76.2 False-positive serological test for syphilis
False-positive Wassermann reaction
R76.8 Other specified abnormal immunological findings in serum
Raised level of immunoglobulins NOS
R76.9 Abnormal immunological finding in serum, unspecified

R77 Other abnormalities of plasma proteins
Excludes: disorders of plasma-protein metabolism ( E88.0 )
R77.0 Abnormality of albumin
R77.1 Abnormality of globulin
Hyperglobulinaemia NOS
R77.2 Abnormality of alphafetoprotein
R77.8 Other specified abnormalities of plasma proteins
R77.9 Abnormality of plasma protein, unspecified

R78 Findings of drugs and other substances, not normally found in blood
Excludes: mental and behavioural disorders due to psychoactive substance use ( F10-F19 )
R78.0 Finding of alcohol in blood
Use additional external cause code (Y90), if desired, for detail regarding alcohol level.
R78.1 Finding of opiate drug in blood
R78.2 Finding of cocaine in blood
R78.3 Finding of hallucinogen in blood
R78.4 Finding of other drugs of addictive potential in blood
R78.5 Finding of psychotropic drug in blood
R78.6 Finding of steroid agent in blood
R78.7 Finding of abnormal level of heavy metals in blood
R78.8 Finding of other specified substances, not normally found in blood
Finding of abnormal level of lithium in blood
R78.9 Finding of unspecified substance, not normally found in blood

R79 Other abnormal findings of blood chemistry
Excludes: abnormality of fluid, electrolyte or acid-base balance ( E86-E87 )
asymptomatic hyperuricaemia ( E79.0 )
hyperglycaemia NOS ( R73.9 )
hypoglycaemia NOS ( E16.2 )
· neonatal ( P70.3-P70.4 )
specific findings indicating disorder of:
· amino-acid metabolism ( E70-E72 )
· carbohydrate metabolism ( E73-E74 )
· lipid metabolism ( E75.- )
R79.0 Abnormal level of blood mineral
Abnormal blood level of:
· cobalt
· copper
· iron
· magnesium
· mineral NEC
· zinc
Excludes: abnormal level of lithium ( R78.8 )
disorders of mineral metabolism ( E83.- )
neonatal hypomagnesaemia ( P71.2 )
nutritional mineral deficiency ( E58-E61 )
R79.8 Other specified abnormal findings of blood chemistry
Abnormal blood-gas level
R79.9 Abnormal finding of blood chemistry, unspecified