Abnormal findings in cerebrospinal fluid (R83)

The ICD-10 code R83 section is used to record abnormal findings in cerebrospinal fluid (CSF) without assigning a specific diagnosis. These codes help identify various unusual lab results detected during CSF analysis.

This section includes detailed codes for specific abnormal CSF components: R83.0 for enzyme levels outside the normal range, R83.1 for hormone imbalances, and R83.2 and R83.3 for abnormal levels of drugs or other substances. Immunological abnormalities in CSF are captured with R83.4, while microbiological findings such as microorganisms identified in the fluid are coded under R83.5. Cytological abnormalities, involving abnormal cell counts or types (e.g., pleocytosis or lymphocytosis), use R83.6. Other miscellaneous abnormal CSF findings; like altered protein, glucose, chloride levels, or unusual fluid appearance; are classified under R83.8. When findings are abnormal but unspecified, R83.9 applies.

For medical coders looking for the ICD-10 code for abnormal findings in cerebrospinal fluid, referencing these subcodes is essential to accurately capture the nature of the CSF abnormalities reported in diagnostic testing.