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ICD-10 Guide
ICD-10 CodesM67.37

M67.37

Billable

Transient synovitis, ankle and foot

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/17/2025

Code Description

ICD-10 M67.37 is a billable code used to indicate a diagnosis of transient synovitis, ankle and foot.

Key Diagnostic Point:

Transient synovitis of the ankle and foot is a benign inflammatory condition characterized by the temporary inflammation of the synovial membrane surrounding the joints. This condition is most commonly seen in children and can present with symptoms such as joint pain, swelling, and limited range of motion. The etiology is often idiopathic, but it may be associated with recent infections or trauma. Diagnosis is typically made through clinical evaluation and imaging studies, such as ultrasound or MRI, which can help visualize the effusion and inflammation in the synovial space. Treatment usually involves conservative management, including rest, ice, and non-steroidal anti-inflammatory drugs (NSAIDs). In some cases, aspiration of the joint may be necessary to relieve symptoms. While transient synovitis is self-limiting, it is crucial to differentiate it from more serious conditions such as septic arthritis or osteomyelitis, which may require more aggressive intervention.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from septic arthritis and other inflammatory conditions
  • Need for precise documentation of symptoms and treatment
  • Variability in presentation among different age groups
  • Potential for co-existing conditions affecting the ankle and foot

Audit Risk Factors

  • Inadequate documentation of clinical findings
  • Failure to differentiate from septic conditions
  • Misuse of codes for chronic conditions
  • Lack of imaging documentation

Specialty Focus

Medical Specialties

Pediatrics

Documentation Requirements

Detailed history of symptoms, physical examination findings, and any imaging results.

Common Clinical Scenarios

Children presenting with limping or refusal to bear weight on the affected limb.

Billing Considerations

Consideration of growth plate involvement and differential diagnosis of osteomyelitis.

Orthopedics

Documentation Requirements

Comprehensive assessment of joint function, imaging studies, and treatment plans.

Common Clinical Scenarios

Adults with acute onset of ankle pain following minor trauma.

Billing Considerations

Assessment for potential tendon injuries or ruptures that may coexist.

Coding Guidelines

Inclusion Criteria

Use M67.37 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the clinical presentation and treatment
  • Include any relevant imaging studies and differentiate from other inflammatory joint diseases

Exclusion Criteria

Do NOT use M67.37 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

20610CPT Code

Arthrocentesis, aspiration and/or injection into a major joint or bursa

Clinical Scenario

Used when joint aspiration is performed to relieve effusion.

Documentation Requirements

Document indication for aspiration, procedure details, and post-procedure assessment.

Specialty Considerations

Orthopedic specialists may perform this procedure more frequently.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of transient synovitis, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of transient synovitis, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What are the common symptoms of transient synovitis?

Common symptoms include joint pain, swelling, tenderness, and limited range of motion, often following a recent illness or injury.

How is transient synovitis diagnosed?

Diagnosis is primarily clinical, supported by imaging studies such as ultrasound or MRI to assess for joint effusion and inflammation.