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v1.0.0
ICD-10 Guide
ICD-10 CodesG12.2

G12.2

Billable

Motor neuron disease

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 G12.2 is a billable code used to indicate a diagnosis of motor neuron disease.

Key Diagnostic Point:

Motor neuron disease (MND) encompasses a group of progressive neurological disorders that affect motor neurons, the nerve cells responsible for controlling voluntary muscle movements. The degeneration of these neurons leads to muscle weakness, atrophy, and eventual paralysis. MND includes conditions such as amyotrophic lateral sclerosis (ALS), progressive muscular atrophy, and primary lateral sclerosis. The etiology of MND can be hereditary, with familial forms linked to genetic mutations, or sporadic, with no clear genetic predisposition. Symptoms typically begin with muscle weakness, twitching, and cramping, progressing to difficulties in speaking, swallowing, and breathing. Diagnosis is primarily clinical, supported by electromyography (EMG) and neuroimaging to rule out other conditions. The management of MND is multidisciplinary, focusing on symptom relief and maintaining quality of life, as there is currently no cure. Understanding the nuances of MND is crucial for accurate coding, as it can overlap with other neurodegenerative diseases such as Huntington's disease and various forms of ataxia.

Code Complexity Analysis

Complexity Rating: High

High Complexity

Complexity Factors

  • Variety of related conditions under the same code
  • Need for precise documentation of symptoms and progression
  • Differentiation from other neurodegenerative diseases
  • Potential for hereditary vs. sporadic classification

Audit Risk Factors

  • Inadequate documentation of symptom progression
  • Misclassification of hereditary vs. sporadic forms
  • Failure to document co-existing conditions
  • Inconsistent use of diagnostic tests in documentation

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Comprehensive neurological examination findings, including EMG results and imaging studies.

Common Clinical Scenarios

Diagnosis of MND in patients presenting with muscle weakness and atrophy.

Billing Considerations

Ensure clear documentation of the type of MND and any genetic testing results.

Physical Medicine and Rehabilitation

Documentation Requirements

Detailed assessment of functional status and rehabilitation goals.

Common Clinical Scenarios

Rehabilitation planning for patients with advanced MND.

Billing Considerations

Documenting the impact of MND on daily living activities and mobility.

Coding Guidelines

Inclusion Criteria

Use G12.2 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the specific type of motor neuron disease
  • Include any relevant co
  • morbidities and specify whether the condition is hereditary or sporadic

Exclusion Criteria

Do NOT use G12.2 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

958.0CPT Code

Electromyography

Clinical Scenario

Used to confirm diagnosis of motor neuron disease.

Documentation Requirements

Document the rationale for EMG and findings.

Specialty Considerations

Neurologists should ensure comprehensive reporting of EMG results.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of motor neuron diseases, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of disease prevalence and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of motor neuron diseases, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of disease prevalence and outcomes.

Reimbursement & Billing Impact

reimbursement processes. It has also facilitated better tracking of disease prevalence and outcomes.

Resources

Clinical References

  • •
    Motor Neuron Disease Association

Coding & Billing References

  • •
    Motor Neuron Disease Association

Frequently Asked Questions

What is the difference between hereditary and sporadic motor neuron disease?

Hereditary motor neuron disease is caused by genetic mutations passed through families, while sporadic cases occur without a known genetic link. Accurate documentation of family history is crucial for coding.