M00.869
Arthritis due to other bacteria, unspecified knee
Clinical Classification Guidelines
Medical Intelligence & Overview
Arthritis caused by bacterial infection in the knee joint is a serious condition that can lead to pain, swelling, and joint damage. When the infection is due to bacteria other than the common pathogens, it is categorized under ICD-10 code M00.869. This type of arthritis is a form of septic arthritis, which requires prompt attention to prevent long-term joint problems.
Causes & Symptoms
Clinical Causes: Bacterial infections originating from skin, bloodstream, or neighboring tissues Infections spread from other parts of the body through the bloodstream (hematogenous spread) Direct entry of bacteria through a wound or injury near the knee Infections resulting from the spread of bacteria during surgeries or invasive procedures on the knee Less commonly, bacteria that are not typically associated with joint infections, such as certain atypical bacteria or resistant strains
Key Symptoms: Severe pain in the knee, often worsening with movement Swelling and redness around the knee joint Increased warmth over the affected area Limited range of motion or difficulty moving the knee Fever and general malaise, especially if the infection is systemic Tenderness when touching the knee
Diagnostic & Treatment
Diagnosis Path: Medical history review and physical examination focusing on joint swelling, warmth, and pain Blood tests to detect infection markers and identify bacteria Joint aspiration: extracting synovial fluid from the knee for laboratory analysis Imaging studies such as X-rays, ultrasound, or MRI to assess joint damage and rule out other causes Microbiological analysis of joint fluid to determine the specific bacteria causing the infection
Treatment Protocols: Antibiotic therapy tailored to the identified bacteria, often administered intravenously Aspiration or drainage of infected joint fluid to reduce bacteria and inflammatory substances Immobilization of the knee to prevent further injury or damage Pain management with medications as needed Possible surgical intervention to debride the joint or remove infected tissue if the infection is severe or unresponsive to initial treatments Physical therapy may be initiated after infection control to restore joint function
Clinical Advice & FAQs
Billing Guidance
Is M00.869 a billable ICD-10 code?
Yes, M00.869 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M00.869?
Clinical documentation must specify the nature of Arthritis due to other bacteria, unspecified knee and any associated comorbidities for accurate reporting.
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