Billable / Specific Code
ICD-10-CM R83.5 is the diagnosis code for Abnormal microbiological 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 billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as R83.5. They are mutually exclusive:
Understanding where R83.5 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, R83.5 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
R83.5 is the ICD-10-CM diagnosis code for "Abnormal microbiological findings in cerebrospinal fluid". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of R83.5 is R83 ("Abnormal findings in cerebrospinal fluid"). R83.5 provides a more specific classification within this category.
R83.5 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.
Use R83.5 when the patients documented diagnosis matches "Abnormal microbiological 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 microbiological findings in cerebrospinal fluid is R83.5.
Yes, R83.5 can be used as a primary diagnosis code since it is billable and specific.
R83.5 is in Chapter 18 of the ICD-10-CM Tabular List.
Type 1 Excludes for R83.5 include: colonization status (Z22.-).
Yes, R83.5 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.