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v1.0.0
ICD-10 Guide
ICD-10 CodesM05.371

M05.371

Billable

Rheumatoid heart disease with rheumatoid arthritis of right ankle and foot

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

Code Description

ICD-10 M05.371 is a billable code used to indicate a diagnosis of rheumatoid heart disease with rheumatoid arthritis of right ankle and foot.

Key Diagnostic Point:

Rheumatoid heart disease is a complication of rheumatoid arthritis (RA), characterized by inflammation of the heart's tissues, which can lead to pericarditis, myocarditis, or valvular heart disease. The right ankle and foot involvement in RA typically presents with synovitis, leading to pain, swelling, and stiffness, particularly in the morning or after periods of inactivity. Anatomically, the right ankle consists of the tibia, fibula, and talus, with multiple ligaments and tendons that can be affected by the inflammatory process. Clinically, patients may experience limited range of motion, difficulty in weight-bearing activities, and joint deformities over time. The systemic nature of RA necessitates a comprehensive approach to treatment, including disease-modifying antirheumatic drugs (DMARDs), corticosteroids, and physical therapy to manage both joint and cardiac symptoms.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Involvement of multiple body systems (musculoskeletal and cardiovascular)
  • Need for precise documentation of joint involvement and severity
  • Potential for overlapping symptoms with other conditions
  • Complexity of treatment regimens and monitoring requirements

Audit Risk Factors

  • Inadequate documentation of joint involvement and severity
  • Failure to document systemic manifestations of rheumatoid arthritis
  • Misclassification of laterality or specific joint involvement
  • Inconsistent coding of related cardiac conditions

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Orthopedic documentation should include imaging studies (X-rays, MRIs) to assess joint damage, functional assessments to evaluate mobility, and detailed notes on joint swelling and tenderness.

Common Clinical Scenarios

Common scenarios include surgical interventions for joint deformities or arthroplasties due to severe RA.

Billing Considerations

Joint-specific considerations include documenting the degree of joint destruction and functional limitations.

Rheumatology

Documentation Requirements

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

Common Clinical Scenarios

Scenarios often involve managing flares of RA and adjusting DMARD therapy based on disease progression.

Billing Considerations

Systemic involvement, such as cardiac symptoms, must be documented to justify the complexity of care.

Physical Medicine

Documentation Requirements

Functional assessments should evaluate the patient's ability to perform daily activities and the need for assistive devices.

Common Clinical Scenarios

Rehabilitation scenarios may include physical therapy for joint mobility and strength training.

Billing Considerations

Mobility limitations should be clearly documented to support the need for rehabilitation services.

Coding Guidelines

Inclusion Criteria

Use M05.371 When
  • Official coding guidelines require accurate documentation of laterality (right ankle and foot), severity of rheumatoid arthritis, and any associated cardiac conditions
  • Encounter type (initial, follow
  • up, or exacerbation) must also be documented

Exclusion Criteria

Do NOT use M05.371 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 swelling management in RA patients.

Documentation Requirements

Document the joint involved, the procedure performed, and the indication for the procedure.

Specialty Considerations

Orthopedic and rheumatologic considerations include the need for imaging guidance.

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, enabling better tracking of disease progression and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding musculoskeletal conditions, enabling better tracking of disease progression and treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for greater specificity in coding musculoskeletal conditions, enabling better tracking of disease progression 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 key documentation requirements for coding M05.371?

Key documentation requirements include detailed notes on joint involvement, severity of symptoms, laboratory results indicating systemic involvement, and any cardiac assessments performed.