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v1.0.0
ICD-10 Guide
ICD-10 CodesM02.20

M02.20

Billable

Postimmunization arthropathy, unspecified site

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/12/2025

Code Description

ICD-10 M02.20 is a billable code used to indicate a diagnosis of postimmunization arthropathy, unspecified site.

Key Diagnostic Point:

Postimmunization arthropathy refers to joint pain and inflammation that occurs following vaccination. This condition is characterized by the development of arthritic symptoms, which may include swelling, stiffness, and pain in the joints. The pathophysiology is thought to involve an immune-mediated response triggered by the vaccine, leading to synovial inflammation and joint damage. Clinically, patients may present with symptoms similar to those of rheumatoid arthritis or other inflammatory arthropathies, but with a clear temporal relationship to vaccination. Commonly affected joints include the knees, wrists, and hands, although the condition can manifest in any joint. The anatomical considerations involve the synovial joints, where inflammation can lead to decreased range of motion and functional impairment. Treatment typically includes NSAIDs for pain relief and inflammation control, and in some cases, corticosteroids may be indicated for severe symptoms.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Temporal relationship to vaccination must be established.
  • Differentiation from other inflammatory arthropathies is necessary.
  • Documentation of joint involvement and severity is critical.
  • Potential for systemic involvement complicates diagnosis.

Audit Risk Factors

  • Inadequate documentation of the temporal relationship to vaccination.
  • Failure to document joint involvement and severity.
  • Misclassification with other arthropathies.
  • Lack of supporting evidence for treatment decisions.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Orthopedic documentation should include imaging studies (e.g., X-rays, MRIs) to assess joint integrity and functional assessments to evaluate range of motion.

Common Clinical Scenarios

Patients presenting with joint pain post-vaccination may require surgical evaluation if conservative management fails.

Billing Considerations

Joint-specific considerations include assessing for effusion, tenderness, and range of motion limitations.

Rheumatology

Documentation Requirements

Rheumatologic documentation should include laboratory tests for inflammation markers (e.g., ESR, CRP) and assessments of disease activity.

Common Clinical Scenarios

Patients may present with systemic symptoms such as fatigue and malaise alongside joint symptoms.

Billing Considerations

Systemic involvement may necessitate a broader evaluation for autoimmune conditions.

Physical Medicine

Documentation Requirements

Functional assessments should document mobility limitations and the need for assistive devices.

Common Clinical Scenarios

Rehabilitation scenarios may include physical therapy to restore joint function and mobility.

Billing Considerations

Assessment of the patient's ability to perform activities of daily living is crucial.

Coding Guidelines

Inclusion Criteria

Use M02.20 When
  • Official coding guidelines require documentation of the specific joint(s) involved, the severity of symptoms, and the encounter type (initial visit, follow
  • up, etc
  • Laterality is not applicable for unspecified site coding

Exclusion Criteria

Do NOT use M02.20 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used for follow-up visits to assess joint symptoms post-vaccination.

Documentation Requirements

Documentation must include history, examination findings, and treatment plan.

Specialty Considerations

Orthopedic and rheumatologic considerations for joint assessment.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for greater specificity in coding musculoskeletal conditions, including postimmunization arthropathy, which can improve patient management and billing accuracy.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding musculoskeletal conditions, including postimmunization arthropathy, which can improve patient management and billing accuracy.

Reimbursement & Billing Impact

billing accuracy.

Resources

Clinical References

  • •
    American Academy of Orthopaedic Surgeons Guidelines
  • •
    American College of Rheumatology Recommendations

Coding & Billing References

  • •
    American Academy of Orthopaedic Surgeons Guidelines
  • •
    American College of Rheumatology Recommendations

Frequently Asked Questions

What are the common symptoms of postimmunization arthropathy?

Common symptoms include joint pain, swelling, stiffness, and reduced range of motion, typically occurring within weeks of vaccination.