All ICD10 Codes
R83Not billable, use a more specific code below

Abnormal findings in cerebrospinal fluid

In Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89), chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings

9 billable codes under R83: none are a CC or MCC; none map to an HCC.

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Instructional notes

Also applies, from Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89)

These notes sit on R83-R89 and apply to every code under it, including R83.

Excludes1: not coded here, use a different code

  • abnormal findings on antenatal screening of mother (O28.-)
  • diagnostic abnormal findings classified elsewhere - see Alphabetical Index

Excludes2: not included here, code separately if applicable

  • abnormal findings on examination of blood, without diagnosis (R70-R79)
  • abnormal findings on examination of urine, without diagnosis (R80-R82)
  • abnormal tumor markers (R97.-)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers when to report symptom, sign, and abnormal finding codes (R00-R99), plus specific rules for falls, coma scales, non-infectious SIRS, death NOS, and NIHSS scores.

Read Section I.C.18 (page 75), 1 more topics

All codes under R83

R83 can't be used on a claim. Pick a billable code below; grey headings group them.

R83 MS-DRGs

As the principal diagnosis, all 9 billable codes under R83 group to MS-DRG 091, 092, or 093 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.