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

R70Elevated erythrocyte sedimentation rate and abnormality of plasma viscosity

R70.0Elevated erythrocyte sedimentation rate

R70.1Abnormal plasma viscosity

R71Abnormality of red blood cells
Excludes 1: anemias (D50-D64)
› anemia of premature infant (P61.2)
› benign (familial) polycythemia (D75.0)
› congenital anemias (P61.2-P61.4)
› newborn anemia due to isoimmunization (P55.-)
› polycythemia neonatorum (P61.1)
› polycythemia NOS (D75.1)
› polycythemia vera (D45)
› secondary polycythemia (D75.1)

R71.0Precipitous drop in hematocrit
› Drop (precipitous) in hemoglobin
› Drop in hematocrit

R71.8Other abnormality of red blood cells
› Abnormal red-cell morphology NOS
› Abnormal red-cell volume NOS
› Anisocytosis
› Poikilocytosis

R73Elevated blood glucose level
Excludes 1: diabetes mellitus (E08-E13)
› diabetes mellitus in pregnancy, childbirth and the puerperium (O24.-)
› neonatal disorders (P70.0-P70.2)
› postsurgical hypoinsulinemia (E89.1)

R73.0Abnormal glucose
Excludes 1: abnormal glucose in pregnancy (O99.81-)
› diabetes mellitus (E08-E13)
› dysmetabolic syndrome X (E88.81-)
› gestational diabetes (O24.4-)
› glycosuria (R81)
› hypoglycemia (E16.2)

R73.01Impaired fasting glucose
› Elevated fasting glucose

R73.02Impaired glucose tolerance (oral)
› Elevated glucose tolerance

R73.03Prediabetes
› Latent diabetes

R73.09Other abnormal glucose
› Abnormal glucose NOS
› Abnormal non-fasting glucose tolerance

R73.9Hyperglycemia, unspecified

R74Abnormal serum enzyme levels

R74.0Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]

R74.01Elevation of levels of liver transaminase levels
› Elevation of levels of alanine transaminase (ALT)
› Elevation of levels of aspartate transaminase (AST)

R74.02Elevation of levels of lactic acid dehydrogenase [LDH]

R74.8Abnormal levels of other serum enzymes
› Abnormal level of acid phosphatase
› Abnormal level of alkaline phosphatase
› Abnormal level of amylase
› Abnormal level of lipase [triacylglycerol lipase]

R74.9Abnormal serum enzyme level, unspecified

R75Inconclusive laboratory evidence of human immunodeficiency virus [HIV]
› Nonconclusive HIV-test finding in infants
Excludes 1: asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
› human immunodeficiency virus [HIV] disease (B20)

R76Other abnormal immunological findings in serum

R76.0Raised antibody titer
Excludes 1: isoimmunization in pregnancy (O36.0-O36.1)
› isoimmunization affecting newborn (P55.-)

R76.1Nonspecific reaction to test for tuberculosis

R76.11Nonspecific reaction to tuberculin skin test without active tuberculosis
› Abnormal result of Mantoux test
› PPD positive
› Tuberculin (skin test) positive
› Tuberculin (skin test) reactor
Excludes 1: nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis (R76.12)

R76.12Nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis
› Nonspecific reaction to QuantiFERON-TB test (QFT) without active tuberculosis
Excludes 1: nonspecific reaction to tuberculin skin test without active tuberculosis (R76.11)
› positive tuberculin skin test (R76.11)

R76.8Other specified abnormal immunological findings in serum
› Raised level of immunoglobulins NOS

R76.9Abnormal immunological finding in serum, unspecified

R77Other abnormalities of plasma proteins
Excludes 1: disorders of plasma-protein metabolism (E88.0-)

R77.0Abnormality of albumin

R77.1Abnormality of globulin
› Hyperglobulinemia NOS

R77.2Abnormality of alphafetoprotein

R77.8Other specified abnormalities of plasma proteins

R77.9Abnormality of plasma protein, unspecified

R78Findings of drugs and other substances, not normally found in blood
Use Additional Code: code to identify the any retained foreign body, if applicable (Z18.-)
Excludes 2: mental or behavioral disorders due to psychoactive substance use (F10-F19)

R78.0Finding of alcohol in blood
Use Additional Code: external cause code (Y90.-), for detail regarding alcohol level.

R78.1Finding of opiate drug in blood

R78.2Finding of cocaine in blood

R78.3Finding of hallucinogen in blood

R78.4Finding of other drugs of addictive potential in blood

R78.5Finding of other psychotropic drug in blood

R78.6Finding of steroid agent in blood

R78.7Finding of abnormal level of heavy metals in blood

R78.71Abnormal lead level in blood
Excludes 1: lead poisoning (T56.0-)

R78.79Finding of abnormal level of heavy metals in blood

R78.8Finding of other specified substances, not normally found in blood

R78.81Bacteremia
Excludes 1: sepsis-code to specified infection

R78.89Finding of other specified substances, not normally found in blood
› Finding of abnormal level of lithium in blood

R78.9Finding of unspecified substance, not normally found in blood

R79Other abnormal findings of blood chemistry
Use Additional Code: code to identify any retained foreign body, if applicable (Z18.-)
Excludes 1: asymptomatic hyperuricemia (E79.0)
› hyperglycemia NOS (R73.9)
› hypoglycemia NOS (E16.2)
› neonatal hypoglycemia (P70.3-P70.4)
› specific findings indicating disorder of amino-acid metabolism (E70-E72)
› specific findings indicating disorder of carbohydrate metabolism (E73-E74)
› specific findings indicating disorder of lipid metabolism (E75.-)

R79.0Abnormal level of blood mineral
› Abnormal blood level of cobalt
› Abnormal blood level of copper
› Abnormal blood level of iron
› Abnormal blood level of magnesium
› Abnormal blood level of mineral NEC
› Abnormal blood level of zinc
Excludes 1: abnormal level of lithium (R78.89)
› disorders of mineral metabolism (E83.-)
› neonatal hypomagnesemia (P71.2)
› nutritional mineral deficiency (E58-E61)

R79.1Abnormal coagulation profile
› Abnormal or prolonged bleeding time
› Abnormal or prolonged coagulation time
› Abnormal or prolonged partial thromboplastin time [PTT]
› Abnormal or prolonged prothrombin time [PT]
› Low von Willebrand factor
Excludes 1: coagulation defects (D68.-)
Excludes 2: abnormality of fluid, electrolyte or acid-base balance (E86-E87)

R79.8Other specified abnormal findings of blood chemistry

R79.81Abnormal blood-gas level

R79.82Elevated C-reactive protein (CRP)

R79.83Abnormal findings of blood amino-acid level
› Homocysteinemia
Excludes 1: disorders of amino-acid metabolism (E70-E72)

R79.89Other specified abnormal findings of blood chemistry

R79.9Abnormal finding of blood chemistry, unspecified