Non-Billable / Non-Specific Code
ICD-10-CM R83 is the diagnosis code for Abnormal findings in cerebrospinal fluid. This code falls under the section "Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis" within Chapter 18 — Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where R83 sits in the ICD-10-CM classification helps ensure proper coding:
No, R83 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
R83 is the ICD-10-CM diagnosis code for "Abnormal findings in cerebrospinal fluid". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
R83 is located in Section R83-R89 — "Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis" within Chapter 18 of the ICD-10-CM Tabular List.
R83 has 9 sub-code(s) that provide more specific detail: R83.0, R83.1, R83.2, R83.3, R83.4 and more.
Use R83 when the patients documented diagnosis matches "Abnormal findings in cerebrospinal fluid" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Abnormal findings in cerebrospinal fluid is R83.
No, R83 is non-billable. Use a more specific sub-code for primary diagnosis billing.
R83 is in Chapter 18 of the ICD-10-CM Tabular List.
Yes, R83 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.