Is R83 a billable code?
No. R83 is a header code that groups 9 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
R83: Abnormal findings in cerebrospinal fluid
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
R83 groups related diagnoses under abnormal findings in cerebrospinal fluid. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under R83
- R83.0Abnormal level of enzymes in cerebrospinal fluid
- R83.1Abnormal level of hormones in cerebrospinal fluid
- R83.2Abnormal level of other drugs, medicaments and biological substances in cerebrospinal fluid
- R83.3Abnormal level of substances chiefly nonmedicinal as to source in cerebrospinal fluid
- R83.4Abnormal immunological findings in cerebrospinal fluid
- R83.5Abnormal microbiological findings in cerebrospinal fluid
- R83.6Abnormal cytological findings in cerebrospinal fluid
- R83.8Other abnormal findings in cerebrospinal fluid
- R83.9Unspecified abnormal finding in cerebrospinal fluid
R83 questions
What does R83 mean?
R83 is the ICD-10-CM code for Abnormal findings in cerebrospinal fluid. It is in chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.