ICD-10 Coding for Glutamic Acid Decarboxylase Antibody(E10.9, G25.89)
Complete ICD-10-CM coding and documentation guide for Glutamic Acid Decarboxylase Antibody. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Glutamic Acid Decarboxylase Antibody
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| E10.9 | Type 1 diabetes mellitus without complications | Use when GAD antibodies confirm autoimmune diabetes etiology. |
|
| G25.89 | Other specified extrapyramidal and movement disorders | Use for confirmed Stiff-Person Syndrome with high GAD antibody titers. |
|
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 GAD antibodies
Essential facts and insights about Glutamic Acid Decarboxylase Antibody
Primary ICD-10-CM Codes for glutamic acid decarboxylase
Decision Criteria
clinical Criteria
- Presence of GAD antibodies and insulin dependence
Applicable To
- Autoimmune diabetes confirmed by GAD antibodies
Excludes
- Type 2 diabetes mellitus (E11.-)
Clinical Validation Requirements
- GAD-65 antibody level >1.05 U/mL
- Hyperglycemia or insulin dependence
Code-Specific Risks
- Misclassification as type 2 diabetes
- Lack of documented antibody levels
Coding Notes
- Ensure documentation of GAD antibody levels and clinical presentation.
G25.89 - Other specified extrapyramidal and movement disorders
Use for confirmed Stiff-Person Syndrome with high GAD antibody titers.
Applicable To
- Stiff-Person Syndrome with GAD antibodies
Excludes
- Multiple sclerosis (G35)
Clinical Validation Requirements
- GAD-65 antibody level >20,000 U/mL
- Presence of rigidity and spasms
Coding Notes
Document detailed neurological examination and antibody levels.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Differential Codes
Alternative codes to consider when ruling out similar conditions to the primary diagnosis.
Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Glutamic Acid Decarboxylase Antibody to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code E10.9.
Impact
Clinical: May lead to misdiagnosis or inappropriate treatment., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials due to insufficient documentation.
Mitigation Strategy
Always include lab results in the patient's medical record., Ensure linkage between lab results and clinical diagnosis.
Impact
Reimbursement: Incorrect coding may lead to claim denials., Compliance: Non-compliance with coding standards., Data Quality: Inaccurate patient records and data reporting.
Mitigation Strategy
Ensure GAD refers to glutamic acid decarboxylase in the context of diabetes or neurological disorders.
Impact
Failure to document specific GAD antibody levels and clinical indications.
Mitigation Strategy
Implement standardized templates for documenting lab results and clinical findings.
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 Glutamic Acid Decarboxylase Antibody, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Glutamic Acid Decarboxylase Antibody
Use these documentation templates to ensure complete and accurate documentation for Glutamic Acid Decarboxylase Antibody. These templates include all required elements for proper coding and billing.
Autoimmune Diabetes Diagnosis
Specialty: EndocrinologyRequired Elements
- Patient history
- GAD antibody levels
- Insulin dependence
- Clinical presentation
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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