R83 ICD-10-CM Code: Abnormal findings in cerebrospinal fluid
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
R83Abnormal findings in cerebrospinal fluid
ICD-10-CM diagnosis code · United States clinical modification
Where R83 sits
- 1
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
- 2
Section
Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89)
- 3
Category R83
Abnormal findings in cerebrospinal fluid
- 4
Code R83
Abnormal findings in cerebrospinal fluid
Codes under R83
R83 is a non-billable category. Choose the child code that best matches the documented diagnosis.
R83.0Abnormal level of enzymes in cerebrospinal fluidR83.1Abnormal level of hormones in cerebrospinal fluidR83.2Abnormal level of other drugs, medicaments and biological substances in cerebrospinal fluidR83.3Abnormal level of substances chiefly nonmedicinal as to source in cerebrospinal fluidR83.4Abnormal immunological findings in cerebrospinal fluidR83.5Abnormal microbiological findings in cerebrospinal fluidR83.6Abnormal cytological findings in cerebrospinal fluidR83.8Other abnormal findings in cerebrospinal fluidR83.9Unspecified abnormal finding in cerebrospinal fluidNotes for this code
Inclusion terms
No inclusion terms are listed for R83.
Code first
No “code first” instruction is listed for R83.
Use additional code
No “use additional code” instruction is listed for R83.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for R83.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for R83.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code R83 mean?
R83 is the FY 2027 U.S. ICD-10-CM code for “Abnormal findings in cerebrospinal fluid.”
Is R83 a billable or specific ICD-10-CM code?
No. R83 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is R83 located in ICD-10-CM?
R83 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89) (R83–R89), under category R83, Abnormal findings in cerebrospinal fluid.
What coding notes are listed for R83?
No inclusion terms are listed for R83 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.