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ICD-10 Guide
ICD-10 CodesM66.841

M66.841

Billable

Spontaneous rupture of other tendons, right hand

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/17/2025

Code Description

ICD-10 M66.841 is a billable code used to indicate a diagnosis of spontaneous rupture of other tendons, right hand.

Key Diagnostic Point:

Spontaneous rupture of tendons in the right hand can occur due to various factors, including underlying conditions such as tenosynovitis, which is the inflammation of the synovial sheath surrounding the tendon. This inflammation can weaken the tendon structure, making it more susceptible to rupture. The spontaneous rupture may present with sudden pain, swelling, and loss of function in the affected hand. Diagnosis typically involves a thorough clinical examination and imaging studies, such as ultrasound or MRI, to confirm the rupture and assess the extent of damage. Treatment may vary from conservative management, including rest and physical therapy, to surgical intervention for tendon repair, depending on the severity of the rupture and the patient's overall health. Accurate coding is essential for proper reimbursement and to reflect the complexity of the condition, especially when associated with other musculoskeletal disorders.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between spontaneous and traumatic ruptures
  • Identifying the specific tendon involved
  • Documenting associated conditions like tenosynovitis
  • Understanding the implications of surgical versus non-surgical treatment

Audit Risk Factors

  • Inadequate documentation of the spontaneous nature of the rupture
  • Failure to specify the tendon involved
  • Lack of imaging studies to support the diagnosis
  • Improper coding of associated conditions

Specialty Focus

Medical Specialties

Orthopedics

Documentation Requirements

Detailed notes on the mechanism of injury, physical examination findings, and imaging results.

Common Clinical Scenarios

Patients presenting with acute pain and swelling in the right hand after a sudden movement or overuse.

Billing Considerations

Ensure that the surgical procedure, if performed, is well-documented to support coding for repairs.

Rheumatology

Documentation Requirements

Comprehensive history of joint and tendon issues, including any autoimmune conditions.

Common Clinical Scenarios

Patients with a history of inflammatory arthritis presenting with tendon ruptures.

Billing Considerations

Document any underlying inflammatory conditions that may contribute to tendon weakness.

Coding Guidelines

Inclusion Criteria

Use M66.841 When
  • Follow official ICD
  • 10 coding guidelines, ensuring that the diagnosis is supported by clinical documentation
  • Include any relevant history of tendon disorders or associated conditions

Exclusion Criteria

Do NOT use M66.841 When
  • Exclude conditions that are not spontaneous ruptures

Related ICD-10 Codes

Related CPT Codes

24357CPT Code

Repair of ruptured tendon, flexor, hand

Clinical Scenario

Used when surgical repair is performed for a spontaneous rupture.

Documentation Requirements

Operative report detailing the procedure and findings.

Specialty Considerations

Orthopedic documentation must include pre-operative assessments and post-operative care plans.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of tendon injuries, improving the accuracy of diagnoses and treatment plans, which can enhance reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of tendon injuries, improving the accuracy of diagnoses and treatment plans, which can enhance reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the difference between spontaneous and traumatic tendon rupture?

Spontaneous tendon rupture occurs without a specific traumatic event, often due to underlying conditions, while traumatic rupture is a direct result of an injury or accident.