ICD-10 Coding for Huntington's Chorea(G10, F02.81)
Complete ICD-10-CM coding and documentation guide for Huntington's Chorea. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Huntington's Chorea
G10Primary Range
Huntington's Disease
This is the primary code for Huntington's Chorea, capturing the genetic disorder characterized by chorea and cognitive decline.
Dementia in other diseases classified elsewhere
Used for coding dementia associated with Huntington's Disease.
Other abnormal involuntary movements
Used for initial presentation of chorea before Huntington's Disease is confirmed.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| G10 | Huntington's Disease | Use when there is a confirmed diagnosis of Huntington's Disease through genetic testing or clinical presentation. |
|
| F02.81 | Dementia in other diseases classified elsewhere with behavioral disturbance | Use as a secondary code when dementia with behavioral disturbance is present in Huntington's Disease. |
|
Clinical Decision Support
Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.
Key Information: ICD-10 code for Huntington's Chorea
Essential facts and insights about Huntington's Chorea
Primary ICD-10-CM Codes for huntington's chorea
Decision Criteria
clinical Criteria
- Presence of progressive chorea and positive family history
coding Criteria
- Genetic confirmation of CAG repeat expansion
Applicable To
- Huntington's Chorea
Excludes
- Benign hereditary chorea (G25.5)
Clinical Validation Requirements
- Genetic confirmation with CAG repeat expansion of ≥36
- Family history of Huntington's Disease
- Progressive chorea and cognitive decline
Code-Specific Risks
- Misclassification if genetic testing is not confirmed
- Incorrect sequencing with dementia codes
Coding Notes
- Ensure genetic testing results are documented to support the use of G10.
F02.81 - Dementia in other diseases classified elsewhere with behavioral disturbance
Use as a secondary code when dementia with behavioral disturbance is present in Huntington's Disease.
Applicable To
- Dementia with behavioral disturbance in Huntington's Disease
Excludes
- Dementia in Alzheimer's disease (F00.-)
Clinical Validation Requirements
- Behavioral disturbances such as aggression or psychosis
- Cognitive decline documented in clinical notes
Coding Notes
Ensure behavioral disturbances are clearly documented.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Dementia with behavioral disturbance
F02.81Differential Codes
Alternative codes to consider when ruling out similar conditions to the primary diagnosis.
Benign hereditary chorea
G25.5Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Huntington's Chorea to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code G10.
Impact
Clinical: Misdiagnosis or delayed diagnosis., Regulatory: Non-compliance with coding standards., Financial: Potential claim denials.
Mitigation Strategy
Ensure genetic test results are included in the patient's medical record., Regular audits of documentation practices.
Impact
Reimbursement: Incorrect coding may lead to denied claims., Compliance: Non-compliance with ICD-10 coding guidelines., Data Quality: Inaccurate patient records and data reporting.
Mitigation Strategy
Always use G10 for active disease, not Z86.69.
Impact
Lack of genetic test documentation for Huntington's Disease coding.
Mitigation Strategy
Require genetic test results for all G10 claims.
Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.
Frequently Asked Questions
Common questions about ICD-10 coding for Huntington's Chorea, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Huntington's Chorea
Use these documentation templates to ensure complete and accurate documentation for Huntington's Chorea. These templates include all required elements for proper coding and billing.
Patient with suspected Huntington's Disease
Specialty: NeurologyRequired Elements
- Family history of Huntington's Disease
- Progressive chorea and cognitive decline
- Genetic testing results
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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