R83.4
ICD-10BillableAbnormal immunological findings in cerebrospinal fluid
Official ICD-10-CM descriptor (FY2026)
Abnormal immunological findings in cerebrospinal fluid
R83.4 is valid for submission on a claim — CMS flags it as a billable, specific code.
Related codes in R83
- R83.0Abnormal level of enzymes in cerebrospinal fluid
- R83.1Abnormal level of hormones in cerebrospinal fluid
- R83.2Abn lev drug/meds/biol subst in cerebrospinal fluid
- R83.3Abn lev substances chiefly nonmedicinal as to source in CSF
- 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
Where this code sits
- Parent code
- R83
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.