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ICD-10 Guide
ICD-10 CodesM05.372

M05.372

Billable

Rheumatoid heart disease with rheumatoid arthritis of left ankle and foot

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

Code Description

ICD-10 M05.372 is a billable code used to indicate a diagnosis of rheumatoid heart disease with rheumatoid arthritis of left ankle and foot.

Key Diagnostic Point:

Rheumatoid heart disease is a complication of rheumatoid arthritis (RA), an autoimmune disorder characterized by chronic inflammation of the joints. In this condition, the immune system mistakenly attacks the synovial membrane, leading to joint swelling, pain, and potential joint damage. The left ankle and foot are commonly affected areas, where inflammation can lead to significant pain, stiffness, and functional impairment. Anatomically, the left ankle consists of the tibia, fibula, and talus, with multiple ligaments and tendons that facilitate movement. The foot comprises 26 bones, including the tarsals, metatarsals, and phalanges, which work together to support weight and enable mobility. Rheumatoid heart disease may manifest as pericarditis, myocarditis, or valvular heart disease, complicating the clinical picture. Patients may present with joint deformities, reduced range of motion, and systemic symptoms such as fatigue and malaise, necessitating a multidisciplinary approach to management.

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 the relationship between rheumatoid arthritis and heart disease
  • Misclassification of laterality or specific joint involvement
  • Lack of evidence for the diagnosis in the medical record

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

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

Common Clinical Scenarios

Common scenarios include surgical interventions for joint deformities, such as arthroplasty or arthroscopy, and management of acute exacerbations of arthritis.

Billing Considerations

Joint-specific considerations include documenting the degree of joint involvement, presence of deformities, and impact on mobility.

Rheumatology

Documentation Requirements

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

Common Clinical Scenarios

Autoimmune and inflammatory scenarios may involve medication management, including DMARDs and biologics, and monitoring for side effects.

Billing Considerations

Systemic involvement factors include monitoring for cardiovascular complications and adjusting treatment plans accordingly.

Physical Medicine

Documentation Requirements

Functional assessments should evaluate mobility, strength, and endurance, along with rehabilitation needs for joint function restoration.

Common Clinical Scenarios

Rehabilitation scenarios may include physical therapy for joint mobility and strength training, as well as occupational therapy for daily living activities.

Billing Considerations

Mobility limitations may necessitate the use of assistive devices, which should be documented for proper coding.

Coding Guidelines

Inclusion Criteria

Use M05.372 When
  • Official coding guidelines require accurate documentation of laterality (left ankle and foot), severity of rheumatoid arthritis, and any associated conditions such as rheumatoid heart disease
  • Encounter type (initial, follow
  • up) must also be documented

Exclusion Criteria

Do NOT use M05.372 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 left ankle or foot.

Documentation Requirements

Document the joint involved, amount of fluid aspirated, and any therapeutic agents injected.

Specialty Considerations

Orthopedic considerations include the need for imaging guidance in some cases.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has increased specificity in coding musculoskeletal conditions, allowing for better tracking of disease progression and treatment outcomes, particularly in complex cases like rheumatoid arthritis with systemic involvement.

ICD-9 vs ICD-10

The transition to ICD-10 has increased specificity in coding musculoskeletal conditions, allowing for better tracking of disease progression and treatment outcomes, particularly in complex cases like rheumatoid arthritis with systemic involvement.

Reimbursement & Billing Impact

The transition to ICD-10 has increased specificity in coding musculoskeletal conditions, allowing for better tracking of disease progression and treatment outcomes, particularly in complex cases like rheumatoid arthritis with systemic involvement.

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 M05.372?

Key documentation includes detailed notes on joint involvement (specifically the left ankle and foot), evidence of rheumatoid heart disease, inflammatory markers, and any functional limitations experienced by the patient.