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ICD-10 Guide
ICD-10 CodesM02.85

M02.85

Billable

Other reactive arthropathies, hip

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

Code Description

ICD-10 M02.85 is a billable code used to indicate a diagnosis of other reactive arthropathies, hip.

Key Diagnostic Point:

M02.85 refers to reactive arthropathies affecting the hip joint, which are inflammatory conditions that arise secondary to infections or other inflammatory processes elsewhere in the body. The hip joint, a ball-and-socket joint formed by the acetabulum of the pelvis and the head of the femur, is crucial for weight-bearing and mobility. Reactive arthropathies can manifest as pain, swelling, and stiffness in the hip, often leading to decreased range of motion and functional impairment. Clinically, patients may present with acute onset of joint pain following a systemic infection, such as a urinary tract infection or gastrointestinal infection. The pathophysiology involves an immune-mediated response where antibodies or immune complexes target joint tissues, leading to inflammation. Diagnosis typically involves clinical evaluation, imaging studies, and laboratory tests to rule out other conditions. Treatment may include nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroids, and physical therapy to restore function and alleviate symptoms.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes (e.g., infections, autoimmune disorders)
  • Need for comprehensive clinical documentation to establish diagnosis
  • Potential for overlapping symptoms with other arthropathies
  • Variability in treatment approaches based on severity and patient response

Audit Risk Factors

  • Inadequate documentation of the underlying cause of the reactive arthropathy
  • Failure to document the severity and functional limitations of the condition
  • Misclassification of the condition due to overlapping symptoms with other arthropathies
  • Lack of supporting imaging or laboratory results in the medical record

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Orthopedic documentation should include imaging studies (X-rays, MRIs) to assess joint integrity and functional assessments to evaluate mobility limitations.

Common Clinical Scenarios

Common scenarios include post-infectious arthritis following a urinary tract infection or gastrointestinal infection, leading to hip pain and dysfunction.

Billing Considerations

Joint-specific considerations include the degree of joint effusion, range of motion limitations, and any associated structural changes seen on imaging.

Rheumatology

Documentation Requirements

Rheumatologic documentation must include inflammation markers (e.g., ESR, CRP) and assessments of disease activity to monitor the inflammatory response.

Common Clinical Scenarios

Autoimmune scenarios may involve patients with a history of reactive arthritis following infections, presenting with hip pain and systemic symptoms.

Billing Considerations

Consideration of systemic involvement is crucial, as reactive arthropathies can be associated with other autoimmune conditions.

Physical Medicine

Documentation Requirements

Functional assessments should document the patient's ability to perform daily activities and any rehabilitation needs.

Common Clinical Scenarios

Rehabilitation scenarios may involve post-acute care for patients recovering from reactive arthritis, focusing on restoring hip function.

Billing Considerations

Mobility limitations and the need for assistive devices should be documented to support the treatment plan.

Coding Guidelines

Inclusion Criteria

Use M02.85 When
  • Official coding guidelines for M02
  • 85 require documentation of laterality (right, left, or bilateral), severity of the condition, and the type of encounter (initial, subsequent, or sequela)
  • Accurate documentation of the underlying cause is also critical for proper coding

Exclusion Criteria

Do NOT use M02.85 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 aspiration in cases of reactive arthritis to relieve swelling and pain.

Documentation Requirements

Documentation must include the indication for the procedure, joint involved, and any imaging guidance used.

Specialty Considerations

Orthopedic and rheumatologic considerations include the need for follow-up assessments post-procedure.

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 reactive arthropathies and their management.

ICD-9 vs ICD-10

The transition to ICD-10 has improved specificity in coding musculoskeletal conditions, allowing for better tracking of reactive arthropathies and their management.

Reimbursement & Billing Impact

The transition to ICD-10 has improved specificity in coding musculoskeletal conditions, allowing for better tracking of reactive arthropathies and their management.

Resources

Clinical References

  • •
    American College of Rheumatology Guidelines

Coding & Billing References

  • •
    American College of Rheumatology Guidelines

Frequently Asked Questions

What are the common causes of reactive arthropathies?

Common causes include infections (e.g., urinary tract infections, gastrointestinal infections), autoimmune conditions, and post-viral syndromes. Accurate documentation of the patient's history is essential for proper coding.