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v1.0.0
ICD-10 Guide
ICD-10 CodesG24.9

G24.9

Billable

Dystonia, unspecified

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

Code Description

ICD-10 G24.9 is a billable code used to indicate a diagnosis of dystonia, unspecified.

Key Diagnostic Point:

Dystonia is a movement disorder characterized by sustained muscle contractions, abnormal postures, and twisting movements. It can affect various parts of the body, including the neck, face, and limbs. The condition can be primary, arising without any identifiable cause, or secondary, resulting from other neurological conditions such as Parkinson's disease or as a side effect of certain medications. In the context of Parkinson's disease, dystonia may manifest as a result of dopaminergic medication therapy, particularly in patients who experience fluctuations in their medication response. Extrapyramidal disorders, which include a range of movement abnormalities caused by dysfunction in the basal ganglia, can also lead to dystonia. The clinical presentation of dystonia can vary widely, with some patients experiencing intermittent symptoms while others may have persistent and debilitating manifestations. Accurate diagnosis often requires a thorough clinical evaluation, including a detailed patient history and neurological examination. Treatment options may include pharmacological interventions, such as anticholinergics or botulinum toxin injections, as well as physical therapy to improve mobility and function.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between primary and secondary dystonia
  • Understanding the impact of dopaminergic medications
  • Identifying associated movement disorders
  • Documenting the clinical presentation accurately

Audit Risk Factors

  • Inadequate documentation of symptoms
  • Failure to specify the type of dystonia
  • Misclassification of dystonia as another movement disorder
  • Lack of evidence for secondary causes

Specialty Focus

Medical Specialties

Neurology

Documentation Requirements

Detailed neurological examination findings, history of movement disorders, and response to treatments.

Common Clinical Scenarios

Patients with Parkinson's disease presenting with dystonic movements, patients experiencing medication-induced dystonia.

Billing Considerations

Ensure clear documentation of the relationship between dystonia and any underlying neurological conditions.

Physical Medicine and Rehabilitation

Documentation Requirements

Functional assessments, treatment plans, and progress notes related to movement disorders.

Common Clinical Scenarios

Rehabilitation for patients with dystonia affecting mobility and daily activities.

Billing Considerations

Document the impact of dystonia on functional abilities and the effectiveness of rehabilitation interventions.

Coding Guidelines

Inclusion Criteria

Use G24.9 When
  • According to ICD
  • 10 guidelines, G24
  • 9 should be used when dystonia is present but not specified as primary or secondary
  • Coders should ensure that the documentation supports the diagnosis and that any associated conditions are also coded appropriately

Exclusion Criteria

Do NOT use G24.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Established patient office visit, Level 3

Clinical Scenario

Used for follow-up visits for patients with dystonia.

Documentation Requirements

Document history, examination findings, and treatment plan.

Specialty Considerations

Neurology specialists should ensure comprehensive documentation of neurological assessments.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of dystonia, enabling better tracking of the condition and its treatment outcomes. G24.9 provides a general classification that can be used when the specific type of dystonia is not identified.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of dystonia, enabling better tracking of the condition and its treatment outcomes. G24.9 provides a general classification that can be used when the specific type of dystonia is not identified.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of dystonia, enabling better tracking of the condition and its treatment outcomes. G24.9 provides a general classification that can be used when the specific type of dystonia is not identified.

Resources

Clinical References

  • •
    Dystonia Medical Research Foundation

Coding & Billing References

  • •
    Dystonia Medical Research Foundation

Frequently Asked Questions

What is the difference between G24.9 and G24.0?

G24.9 is used for unspecified dystonia, while G24.0 is specifically for dystonia due to Parkinson's disease. Accurate documentation is crucial to determine the appropriate code.