M46.3
Infection of intervertebral disc (pyogenic)
Clinical Classification Guidelines
Use Additional Code
- code (B95-B97) to identify infectious agent.
Medical Intelligence & Overview
Intervertebral disc infection, also known as pyogenic discitis, is a rare but serious condition where the tissues surrounding the spinal discs become infected. The spinal discs are cushions between the bones of the spine, providing flexibility and shock absorption. When these discs become infected, it can lead to significant pain, inflammation, and potential neurological complications if not diagnosed and treated promptly. This condition is classified under ICD-10 code M46.3 and requires medical attention to manage effectively.
Causes & Symptoms
Clinical Causes: Bacterial infections, commonly originating from bacteria such as Staphylococcus aureus or Streptococcus species. Spread from other infections in the body, such as urinary tract infections, skin infections, or bloodstream infections. Introduction of bacteria through spinal procedures or surgeries, such as disc injections or discectomy. Trauma to the spine that damages the disc tissue, making it more susceptible to infection. Weakened immune system due to conditions like diabetes, HIV/AIDS, or use of immunosuppressive medications.
Key Symptoms: Severe back or neck pain that worsens with movement. Fever and chills, indicating systemic infection. Localized tenderness over the affected spinal segment. Limited mobility or stiffness in the spine. Possible neurological signs such as numbness, weakness, or paralysis if the infection impinges on nerves or the spinal cord. General malaise or fatigue.
Diagnostic & Treatment
Diagnosis Path: Medical history review and physical examination focusing on back pain and other symptoms. Blood tests to identify signs of infection, such as elevated white blood cell count, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP). Imaging studies like MRI, which is the most sensitive tool to detect discitis and related spinal infections. Blood cultures to identify the causative bacteria. Biopsy of the disc tissue or adjacent vertebrae if necessary to confirm the diagnosis and identify the causative organism.
Treatment Protocols: Antibiotic therapy, often administered intravenously, tailored based on the identified bacterial pathogen. Rest and activity modification to reduce strain on the affected spinal area. Pain management with analgesics or anti-inflammatory medications. Immobilization of the spine using braces or sometimes surgical stabilization if instability or neurological compromise occurs. Surgical intervention may be necessary in cases of abscess formation, spinal instability, or neurological impairment, involving procedures like drainage or removal of infected tissue. Follow-up imaging and lab tests to monitor response to treatment and ensure infection resolution.
Clinical Advice & FAQs
Billing Guidance
Is M46.3 a billable ICD-10 code?
Yes, M46.3 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M46.3?
Clinical documentation must specify the nature of Infection of intervertebral disc (pyogenic) and any associated comorbidities for accurate reporting.
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