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v1.0.0
ICD-10 Guide
ICD-10 CodesM02.371

M02.371

Billable

Reiter's disease, right ankle and foot

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

Code Description

ICD-10 M02.371 is a billable code used to indicate a diagnosis of reiter's disease, right ankle and foot.

Key Diagnostic Point:

Reiter's disease, also known as reactive arthritis, is an inflammatory condition that typically arises following a genitourinary or gastrointestinal infection. It is characterized by the classic triad of arthritis, urethritis, and conjunctivitis. In the context of the right ankle and foot, the disease manifests as swelling, pain, and stiffness in the affected joints, particularly the ankle and the metatarsophalangeal joints. Anatomically, the right ankle consists of the tibia, fibula, and talus, while the foot comprises multiple bones including the tarsals, metatarsals, and phalanges. The inflammation in Reiter's disease can lead to significant joint damage if not managed appropriately. Clinically, patients may present with limited range of motion, tenderness, and swelling, which can severely impact mobility and quality of life. The pathophysiology involves an autoimmune response triggered by the initial infection, leading to synovial inflammation and subsequent joint damage.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of autoimmune mechanisms and inflammatory processes.
  • Involves specific anatomical knowledge of the right ankle and foot.
  • Documentation must differentiate from other forms of arthritis.
  • Requires awareness of associated systemic symptoms and complications.

Audit Risk Factors

  • Inadequate documentation of joint involvement and laterality.
  • Failure to document the underlying infection that triggered the condition.
  • Misclassification of the disease as a primary arthritis without noting its reactive nature.
  • Lack of evidence for functional limitations or mobility issues.

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

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

Common Clinical Scenarios

Patients may require surgical intervention for severe joint damage or persistent symptoms despite conservative management.

Billing Considerations

Documentation should detail the severity of joint involvement and any surgical procedures performed.

Rheumatology

Documentation Requirements

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

Common Clinical Scenarios

Patients may present with systemic symptoms, requiring a comprehensive evaluation of joint and extra-articular manifestations.

Billing Considerations

Consideration of systemic involvement, such as skin or eye symptoms, is crucial for accurate coding.

Physical Medicine

Documentation Requirements

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

Common Clinical Scenarios

Rehabilitation may focus on restoring function and managing pain through physical therapy.

Billing Considerations

Documentation should reflect the impact of the disease on daily activities and mobility.

Coding Guidelines

Inclusion Criteria

Use M02.371 When
  • 10 coding guidelines require accurate documentation of laterality (right ankle and foot), severity of the condition, and the type of encounter (initial, follow
  • up, etc

Exclusion Criteria

Do NOT use M02.371 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 for joint effusion management in the right ankle.

Documentation Requirements

Document the indication for the procedure, joint involved, and any therapeutic agents used.

Specialty Considerations

Orthopedic and rheumatologic considerations for joint injections.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has improved specificity in coding musculoskeletal conditions, allowing for better tracking of disease prevalence and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has improved specificity in coding musculoskeletal conditions, allowing for better tracking of disease prevalence and treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has improved specificity in coding musculoskeletal conditions, allowing for better tracking of disease prevalence and treatment outcomes.

Resources

Clinical References

  • •
    American College of Rheumatology Guidelines

Coding & Billing References

  • •
    American College of Rheumatology Guidelines

Frequently Asked Questions

What are the common symptoms of Reiter's disease?

Common symptoms include joint pain and swelling, particularly in the ankles and feet, along with possible conjunctivitis and urethritis. Patients may also experience systemic symptoms such as fatigue and fever.