A52.78
Syphilis of other musculoskeletal tissue
Clinical Classification Guidelines
Inclusion Terms
- Late syphilitic bursitis
- Syphilis [stage unspecified] of bursa
- Syphilis [stage unspecified] of muscle
- Syphilis [stage unspecified] of synovium
- Syphilis [stage unspecified] of tendon
Medical Intelligence & Overview
Syphilis of other musculoskeletal tissues, classified under ICD-10 code A52.78, is a rare form of syphilitic infection that affects muscles, tendons, bursae, and synovial membranes. Typically considered a late manifestation of untreated syphilis, this condition involves the infiltration of Treponema pallidum bacteria into these tissues, leading to inflammation, tissue damage, and functional impairments. Recognizing this rare presentation is essential for timely diagnosis and management, especially in patients with a history of untreated or inadequately treated syphilis.
Causes & Symptoms
Clinical Causes: Progression of untreated or inadequately treated syphilis infection Hematogenous spread of Treponema pallidum to musculoskeletal tissues Latency period allowing the bacteria to infiltrate and damage tissues over years
Key Symptoms: Persistent or intermittent joint pain and swelling Muscle soreness or weakness Tenderness over affected bursae, tendons, or synovial tissues Reduced range of motion in affected joints Possible formation of nodules or granulomatous lesions General symptoms may include low-grade fever and fatigue in some cases
Diagnostic & Treatment
Diagnosis Path: Serologic testing for syphilis (e.g., VDRL, RPR, TPHA, FTA-ABS) Histopathological examination of tissue biopsies showing characteristic inflammatory changes and presence of Treponema pallidum Imaging studies such as X-rays, MRI, or ultrasound to assess tissue involvement and exclude other causes Review of patient’s medical history, especially previous syphilis infection or risk factors
Treatment Protocols: Intravenous or intramuscular penicillin G, the preferred antibiotic for late-stage syphilis Duration of therapy varies depending on extent and severity, often ranging from 10 to 14 days Monitoring of serologic response to assess treatment effectiveness Symptomatic management such as analgesics and physical therapy to improve joint and muscle function Regular follow-up to detect potential relapses or complications
Clinical Advice & FAQs
Billing Guidance
Is A52.78 a billable ICD-10 code?
Yes, A52.78 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report A52.78?
Clinical documentation must specify the nature of Syphilis of other musculoskeletal tissue and any associated comorbidities for accurate reporting.
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