M02.161
Postdysenteric arthropathy, right knee
Clinical Classification Guidelines
Medical Intelligence & Overview
Postdysenteric arthropathy, specifically affecting the right knee, is a type of joint inflammation that develops after a gastrointestinal infection caused by dysentery. This condition is part of a broader group of reactive arthritis, which occurs as an immune response triggered by an infection elsewhere in the body. When the right knee becomes inflamed following a dysentery infection, it is classified under the ICD-10 code M02.161. Understanding this condition involves exploring its causes, symptoms, diagnosis, and treatment options.
Causes & Symptoms
Clinical Causes: Previous gastrointestinal infection, commonly caused by bacteria such as Shigella, Salmonella, Yersinia, or Campylobacter An immune response triggered by the infection, leading to inflammation of the knee joint Genetic predisposition, particularly the presence of the HLA-B27 gene, which can increase the risk of reactive arthritis Environmental factors that may influence susceptibility, such as stress or joint injury
Key Symptoms: Swelling in the right knee Pain and tenderness around the joint Stiffness, especially after periods of inactivity Limited range of motion in the affected knee Possible redness and warmth around the joint General symptoms of infection, such as fever or malaise during the initial gastrointestinal illness
Diagnostic & Treatment
Diagnosis Path: Reviewing recent history of gastrointestinal illness to establish a connection Physical examination focusing on the affected knee and other joints Blood tests to identify inflammatory markers, such as ESR and CRP Serologic tests to detect specific infections or immune responses Joint aspiration and analysis of synovial fluid to rule out other causes like septic arthritis Genetic testing for HLA-B27 to assess predisposition
Treatment Protocols: Nonsteroidal anti-inflammatory drugs (NSAIDs) to reduce pain and joint swelling Physical therapy to maintain joint function and mobility Rest and activity modification to prevent exacerbation Corticosteroid injections into the affected knee for severe inflammation Monitoring and managing any underlying infections or immune responses In some cases, disease-modifying antirheumatic drugs (DMARDs) if symptoms persist
Clinical Advice & FAQs
Billing Guidance
Is M02.161 a billable ICD-10 code?
Yes, M02.161 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M02.161?
Clinical documentation must specify the nature of Postdysenteric arthropathy, right knee and any associated comorbidities for accurate reporting.
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