R83.1
✓ Billable
Abnormal level of hormones in cerebrospinal fluid
ICD-10-CM · FY2026 · Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Code
R83.1
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Symptoms, Signs and Abnormal Clinical and Laboratory Findings
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code R83.1?
ICD-10-CM code R83.1 represents Abnormal level of hormones in cerebrospinal fluid. It is a billable diagnosis code in the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter, effective October 1, 2025 – September 30, 2026.
Is R83.1 billable?
Yes. R83.1 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is R83.1 in?
R83.1 belongs to the Symptoms, Signs and Abnormal Clinical and Laboratory Findings chapter (R00–R99) of ICD-10-CM.
Related codes in the R83 category
R83
Abnormal findings in cerebrospinal fluid
Non-billable
R83.0
Abnormal level of enzymes in cerebrospinal fluid
Billable
R83.2
Abnormal level of other drugs, medicaments and biological substances in cerebrospinal fluid
Billable
R83.3
Abnormal level of substances chiefly nonmedicinal as to source in cerebrospinal fluid
Billable
R83.4
Abnormal immunological findings in cerebrospinal fluid
Billable
R83.5
Abnormal microbiological findings in cerebrospinal fluid
Billable
R83.6
Abnormal cytological findings in cerebrospinal fluid
Billable
R83.8
Other abnormal findings in cerebrospinal fluid
Billable
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