M65.18
Other infective (teno)synovitis, other site
Clinical Classification Guidelines
Medical Intelligence & Overview
ICD-10 Code M65.18 refers to a specific type of joint and surrounding tissue inflammation known as other infective (teno)synovitis, affecting sites outside the most common locations. This condition involves an infection leading to inflammation in the synovial membranes of a tendon or joint, which can result in pain, swelling, and impaired movement. Unlike more common forms, this classification covers less typical affected areas, emphasizing the importance of proper diagnosis and treatment.
Causes & Symptoms
Clinical Causes: Bacterial infections, often caused by bacteria such as Staphylococcus or Streptococcus species Spread from nearby infected tissues or skin infections Trauma or injury introducing infectious agents into the joint or tendon sheath Infection following surgical procedures or injections in the affected area Hematogenous spread, where bacteria circulate through the bloodstream to the affected site
Key Symptoms: Localized pain in the affected joint or tendon area Swelling and warmth around the affected site Restricted or painful movement of the joint or tendon Tenderness to touch Potential fever and general malaise if infection is systemic Possible redness or skin changes over the affected area
Diagnostic & Treatment
Diagnosis Path: Physical examination to assess swelling, tenderness, and range of motion Imaging studies such as ultrasound or MRI to visualize inflammation and exclude other causes Laboratory tests, including blood tests to identify infection markers Synovial fluid aspiration from the joint or tendon sheath for microscopy, culture, and sensitivity testing to identify the infectious organism
Treatment Protocols: Antibiotic therapy tailored to the identified infectious agent, often initiated empirically and adjusted based on culture results Immobilization or rest of the affected joint or tendon to reduce strain and facilitate healing Drainage or surgical intervention if abscesses or significant pus collection are present Pain management with analgesics Physical therapy may be recommended once infection control is underway to restore function Monitoring for complications such as joint damage or spread of infection
Clinical Advice & FAQs
Billing Guidance
Is M65.18 a billable ICD-10 code?
Yes, M65.18 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report M65.18?
Clinical documentation must specify the nature of Other infective (teno)synovitis, other site and any associated comorbidities for accurate reporting.
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