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v1.0.0
ICD-10 Guide
ICD-10 CodesM05.039

M05.039

Billable

Felty's syndrome, unspecified wrist

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

Code Description

ICD-10 M05.039 is a billable code used to indicate a diagnosis of felty's syndrome, unspecified wrist.

Key Diagnostic Point:

Felty's syndrome is a rare complication of rheumatoid arthritis characterized by the triad of rheumatoid arthritis, splenomegaly, and neutropenia. Anatomically, the wrist is a complex joint composed of eight carpal bones, which articulate with the radius and ulna, allowing for a wide range of motion. In Felty's syndrome, the inflammatory processes associated with rheumatoid arthritis can lead to joint damage, particularly in the wrist, resulting in pain, swelling, and decreased mobility. Clinically, patients may present with symptoms such as joint stiffness, deformities, and systemic manifestations due to the underlying autoimmune process. The pathophysiology involves immune dysregulation, leading to chronic inflammation and potential joint destruction, which can significantly impact the patient's quality of life and functional abilities.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of autoimmune processes and their impact on musculoskeletal health.
  • Involves multiple systems (rheumatologic and hematologic) complicating diagnosis.
  • Documentation must reflect both joint involvement and systemic symptoms.
  • Differentiation from other forms of arthritis is necessary for accurate coding.

Audit Risk Factors

  • Inadequate documentation of systemic symptoms leading to misclassification.
  • Failure to document the severity of joint involvement.
  • Lack of clarity on the relationship between rheumatoid arthritis and Felty's syndrome.
  • Inconsistent coding of related conditions such as neutropenia.

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 range of motion and strength.

Common Clinical Scenarios

Patients may require surgical intervention for joint deformities or severe pain management.

Billing Considerations

Documentation must detail the specific joints involved and the extent of damage or deformity.

Rheumatology

Documentation Requirements

Rheumatologic documentation should include laboratory tests for inflammation markers (e.g., ESR, CRP) and assessments of disease activity (e.g., DAS28).

Common Clinical Scenarios

Management of Felty's syndrome may involve immunosuppressive therapies and monitoring for complications.

Billing Considerations

Systemic involvement must be documented, including any hematologic abnormalities.

Physical Medicine

Documentation Requirements

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

Common Clinical Scenarios

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

Billing Considerations

Mobility limitations due to joint involvement should be thoroughly documented.

Coding Guidelines

Inclusion Criteria

Use M05.039 When
  • Follow official coding guidelines for laterality (if applicable), severity of symptoms, and type of encounter (initial vs
  • follow
  • Ensure that all relevant conditions are documented to support the diagnosis

Exclusion Criteria

Do NOT use M05.039 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 pain management in patients with Felty's syndrome.

Documentation Requirements

Document the joint involved, the procedure performed, and the patient's response.

Specialty Considerations

Orthopedic and rheumatologic considerations for joint management.

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, particularly in capturing the complexities of autoimmune disorders like Felty's syndrome.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for greater specificity in coding musculoskeletal conditions, particularly in capturing the complexities of autoimmune disorders like Felty's syndrome.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for greater specificity in coding musculoskeletal conditions, particularly in capturing the complexities of autoimmune disorders like Felty's syndrome.

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 Felty's syndrome?

Common symptoms include joint pain and swelling, particularly in the wrists, fatigue, recurrent infections due to neutropenia, and splenomegaly. Patients may also experience systemic symptoms related to rheumatoid arthritis.