R83.5
Abnormal microbiological findings in cerebrospinal fluid
Clinical Classification Guidelines
Inclusion Terms
- Positive culture findings in cerebrospinal fluid
Excludes Type 1
- colonization status (Z22.-)
Medical Intelligence & Overview
ICD-10 code R83.5 refers to abnormal microbiological findings in cerebrospinal fluid (CSF). This diagnosis indicates that laboratory tests have identified the presence of microorganisms or abnormal substances in the fluid surrounding the brain and spinal cord. Such findings may suggest infection or other pathological conditions affecting the central nervous system. Recognizing these findings is crucial for timely diagnosis and management of potential neurological infections.
Causes & Symptoms
Clinical Causes: Bacterial meningitis - infection caused by bacteria such as Streptococcus, Neisseria meningitidis, or Listeria Viral meningitis or encephalitis - infections from viruses like herpes simplex virus, enteroviruses, or arboviruses Fungal infections - including cryptococcosis or histoplasmosis Parasitic infections - such as amoebic or protozoal infections affecting the CNS Non-infectious causes - including inflammatory or autoimmune conditions that may lead to abnormal findings in CSF
Key Symptoms: Headache Neck stiffness or rigidity Fever and chills Photophobia (sensitivity to light) Altered mental status or confusion Nausea and vomiting Sensitivity to sound Possible seizures Weakness or sensory changes
Diagnostic & Treatment
Diagnosis Path: Gram stain and culture to detect bacteria Polymerase chain reaction (PCR) tests for viral DNA or RNA Fungal cultures and microscopy Cell counts, glucose, and protein levels in CSF Additional tests as indicated based on findings
Treatment Protocols: Antibiotic therapy for bacterial infections Antiviral medications for viral infections Antifungal treatments for fungal causes Supportive care such as fluids and medications to manage symptoms Monitoring and managing intracranial pressure if necessary
Clinical Advice & FAQs
Billing Guidance
Is R83.5 a billable ICD-10 code?
Yes, R83.5 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report R83.5?
Clinical documentation must specify the nature of Abnormal microbiological findings in cerebrospinal fluid and any associated comorbidities for accurate reporting.
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