Abnormal findings on examination of blood, without diagnosis (R70-R79)
ICD-10 codes R70-R79 cover abnormal blood test results and unusual findings on blood chemistry when no specific diagnosis has been made. These codes help report unexpected lab findings like abnormal blood glucose, enzyme levels, or presence of substances not normally found in the blood.
This range includes codes such as R70 for elevated erythrocyte sedimentation rate, which is a marker of inflammation. Codes under R73 address elevated blood glucose and conditions like impaired fasting glucose and prediabetes. Abnormal serum enzymes, including liver transaminases and lactate dehydrogenase, are reported with codes starting at R74. Blood chemistry abnormalities such as mineral imbalances and coagulation issues use codes like R79.0 and R79.1. Additionally, R78 series capture the detection of drugs or toxic substances in blood, for example, alcohol or lead levels (e.g., R78.0 or R78.71). These codes also include various nonspecific or inconclusive abnormal immunological findings (R75-R76) and unusual plasma protein levels (R77). Using synonyms like “erythrocyte sedimentation rate outside reference range” or “impaired glucose tolerance test” helps clarify correct code assignment for abnormal blood findings without confirmed diseases.
- Elevated erythrocyte sedimentation rate and abnormality of p
- Abnormality of red blood cells (R71)
- Elevated blood glucose level (R73)
- Abnormal serum enzyme levels (R74)
- Inconclusive laboratory evidence of human immunodeficiency v
- Other abnormal immunological findings in serum (R76)
- Other abnormalities of plasma proteins (R77)
- Findings of drugs and other substances, not normally found i
- Other abnormal findings of blood chemistry (R79)
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
Abnormal findings on examination of blood, without diagnosis (R70-R79)
R70 Elevated erythrocyte sedimentation rate and abnormality of plasma viscosity
- R70.0 Elevated erythrocyte sedimentation rate
- R70.1 Abnormal plasma viscosity
Elevated erythrocyte sedimentation rate and abnormality of plasma viscosity (R70)
R71 Abnormality of red blood cells
- R71.0 Precipitous drop in hematocrit
- R71.8 Other abnormality of red blood cells
Abnormality of red blood cells (R71)
R74 Abnormal serum enzyme levels
R74.0 Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]
- R74.01 Elevation of levels of liver transaminase levels
- R74.02 Elevation of levels of lactic acid dehydrogenase [LDH]
- R74.8 Abnormal levels of other serum enzymes
- R74.9 Abnormal serum enzyme level, unspecified
Abnormal serum enzyme levels (R74)
- R75 Inconclusive laboratory evidence of human immunodeficiency virus [HIV]
Inconclusive laboratory evidence of human immunodeficiency virus [HIV] (R75)
R76 Other abnormal immunological findings in serum
- R76.0 Raised antibody titer
R76.1 Nonspecific reaction to test for tuberculosis
- R76.11 Nonspecific reaction to tuberculin skin test without active tuberculosis
- R76.12 Nonspecific reaction to cell mediated immunity measurement of gamma interferon antigen response without active tuberculosis
- R76.8 Other specified abnormal immunological findings in serum
- R76.9 Abnormal immunological finding in serum, unspecified
Other abnormal immunological findings in serum (R76)
R78 Findings of drugs and other substances, not normally found in blood
- R78.0 Finding of alcohol in blood
- 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 other psychotropic drug in blood
- R78.6 Finding of steroid agent in blood
R78.7 Finding of abnormal level of heavy metals in blood
- R78.71 Abnormal lead level in blood
- R78.79 Finding of abnormal level of heavy metals in blood
R78.8 Finding of other specified substances, not normally found in blood
- R78.81 Bacteremia
- R78.89 Finding of other specified substances, not normally found in blood
- R78.9 Finding of unspecified substance, not normally found in blood
Findings of drugs and other substances, not normally found in blood (R78)
R79 Other abnormal findings of blood chemistry
- R79.0 Abnormal level of blood mineral
- R79.1 Abnormal coagulation profile
R79.8 Other specified abnormal findings of blood chemistry
- R79.81 Abnormal blood-gas level
- R79.82 Elevated C-reactive protein (CRP)
- R79.83 Abnormal findings of blood amino-acid level
- R79.89 Other specified abnormal findings of blood chemistry
- R79.9 Abnormal finding of blood chemistry, unspecified
Other abnormal findings of blood chemistry (R79)
Instructional Notations
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- abnormal findings on antenatal screening of mother O28
- abnormalities of lipids E78
- abnormalities of platelets and thrombocytes D69
- abnormalities of white blood cells classified elsewhere D70 D72
- coagulation hemorrhagic disorders D65 D68
- diagnostic abnormal findings classified elsewhere - see Alphabetical Index
- hemorrhagic and hematological disorders of newborn P50 P61
