| 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 |
| R71.0 | Precipitous drop in hematocrit |
| R71.8 | Other abnormality of red blood cells |
| R73 | Elevated blood glucose level |
| R73.0 | Abnormal glucose |
| R73.01 | Impaired fasting glucose |
| R73.02 | Impaired glucose tolerance (oral) |
| R73.09 | Other abnormal glucose |
| R73.9 | Hyperglycemia, unspecified |
| R74 | Abnormal serum enzyme levels |
| R74.0 | Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH] |
| R74.8 | Abnormal levels of other serum enzymes |
| R74.9 | Abnormal serum enzyme level, unspecified |
| R75 | Inconclusive laboratory evidence of human immunodeficiency virus [HIV] |
| 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 |
| R77 | Other abnormalities of plasma proteins |
| R77.0 | Abnormality of albumin |
| R77.1 | Abnormality of globulin |
| 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 |
| 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 |
| 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) |
| R79.89 | Other specified abnormal findings of blood chemistry |
| R79.9 | Abnormal finding of blood chemistry, unspecified |