| R83 | Abnormal findings in cerebrospinal fluid |
| | Abnormal level of enzymes in cerebrospinal fluid |
| | Abnormal level of hormones in cerebrospinal fluid |
| | Abnormal level of other drugs, medicaments and biological substances in cerebrospinal fluid |
| | Abnormal level of substances chiefly nonmedicinal as to source in cerebrospinal fluid |
| | Abnormal immunological findings in cerebrospinal fluid |
| | Abnormal microbiological findings in cerebrospinal fluid |
| | Abnormal cytological findings in cerebrospinal fluid |
| | Other abnormal findings in cerebrospinal fluid |
| | Unspecified abnormal finding in cerebrospinal fluid |
