All ICD10 Codes
R83Non-billable

Abnormal findings in cerebrospinal fluid

Symptoms, Signs and Abnormal Clinical and Laboratory Findings·Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89)·category·FY 2026

Use a more specific code (9 billable)
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 fluid

CH18 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • abnormal findings on antenatal screening of mother (O28.-)
  • certain conditions originating in the perinatal period (P04-P96)
  • signs and symptoms classified in the body system chapters
  • signs and symptoms of breast (N63, N64.5)

R83-R89 Parent Instructions

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.-)

Clinical Hierarchy

BillableHas subcodes
CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
R83-R89Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis (R83-R89)
R83Abnormal findings in cerebrospinal fluidNot billable
R83.0Abnormal level of enzymes in cerebrospinal fluidBillable
R83.1Abnormal level of hormones in cerebrospinal fluidBillable
R83.2Abnormal level of other drugs, medicaments and biological substances in cerebrospinal fluidBillable
R83.3Abnormal level of substances chiefly nonmedicinal as to source in cerebrospinal fluidBillable
R83.4Abnormal immunological findings in cerebrospinal fluidBillable
R83.5Abnormal microbiological findings in cerebrospinal fluidBillable
R83.6Abnormal cytological findings in cerebrospinal fluidBillable
R83.8Other abnormal findings in cerebrospinal fluidBillable
R83.9Unspecified abnormal finding in cerebrospinal fluidBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.