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ICD-10 Guide
ICD-10 CodesM62.5

M62.5

Billable

Muscle wasting and atrophy, not elsewhere classified

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

Code Description

ICD-10 M62.5 is a billable code used to indicate a diagnosis of muscle wasting and atrophy, not elsewhere classified.

Key Diagnostic Point:

Muscle wasting and atrophy, classified under M62.5, refers to the loss of muscle mass and strength that is not attributed to a specific underlying condition. This can occur due to various factors including disuse, malnutrition, chronic diseases, or neuromuscular disorders. Muscle wasting is characterized by a reduction in muscle size and strength, which can significantly impact a patient's mobility and overall quality of life. It is often seen in conditions such as myositis, where inflammation of the muscles leads to weakness and atrophy. Additionally, muscle wasting can be a consequence of prolonged inactivity, such as in bedridden patients or those with chronic illnesses. The diagnosis of muscle wasting requires careful clinical evaluation, including a thorough history, physical examination, and sometimes imaging studies or laboratory tests to rule out other causes. Treatment typically focuses on addressing the underlying cause, nutritional support, and rehabilitation to restore muscle function.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying causes that can lead to muscle wasting.
  • Need for comprehensive documentation to support the diagnosis.
  • Differentiation from other muscle disorders such as myopathy or neuropathy.
  • Potential overlap with other ICD-10 codes for muscle disorders.

Audit Risk Factors

  • Insufficient documentation of the underlying cause of muscle wasting.
  • Failure to differentiate from other muscle-related diagnoses.
  • Inadequate clinical notes regarding the patient's functional status.
  • Lack of follow-up documentation to support ongoing treatment.

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, including muscle strength testing and reflex assessments.

Common Clinical Scenarios

Patients presenting with unexplained muscle weakness or atrophy, often requiring differential diagnosis.

Billing Considerations

Neurologists must document any neurological deficits and consider potential neuromuscular junction disorders.

Physical Medicine and Rehabilitation

Documentation Requirements

Functional assessments, treatment plans, and progress notes detailing rehabilitation efforts.

Common Clinical Scenarios

Patients recovering from surgery or injury who exhibit muscle wasting due to disuse.

Billing Considerations

Focus on rehabilitation goals and the impact of muscle wasting on functional independence.

Coding Guidelines

Inclusion Criteria

Use M62.5 When
  • According to ICD
  • 10 coding guidelines, M62
  • 5 should be used when muscle wasting is documented without a more specific diagnosis
  • Coders must ensure that the clinical documentation supports the diagnosis and that other potential causes have been ruled out

Exclusion Criteria

Do NOT use M62.5 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

97110CPT Code

Therapeutic exercises

Clinical Scenario

Used in conjunction with M62.5 for rehabilitation of muscle wasting.

Documentation Requirements

Documentation of the patient's functional limitations and goals for therapy.

Specialty Considerations

Physical therapists should document progress and response to therapy.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of muscle disorders, including muscle wasting. This has improved the ability to capture the complexity of muscle-related conditions and their management, leading to better data for research and healthcare planning.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of muscle disorders, including muscle wasting. This has improved the ability to capture the complexity of muscle-related conditions and their management, leading to better data for research and healthcare planning.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of muscle disorders, including muscle wasting. This has improved the ability to capture the complexity of muscle-related conditions and their management, leading to better data for research and healthcare planning.

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 are the common causes of muscle wasting?

Common causes include disuse due to inactivity, chronic diseases such as cancer or COPD, malnutrition, and inflammatory conditions like myositis.

How can muscle wasting be treated?

Treatment often involves addressing the underlying cause, nutritional support, and physical therapy to improve muscle strength and function.