ICD-10 Coding for Thyroid-Related Atrial Fibrillation(E05.90, I48.91)
Complete ICD-10-CM coding and documentation guide for Thyroid-Related Atrial Fibrillation. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Thyroid-Related Atrial Fibrillation
E05.00-E05.90Primary Range
Thyrotoxicosis with or without thyrotoxic crisis
This range includes codes for hyperthyroidism, which is a primary cause of atrial fibrillation in the context of thyroid disorders.
Atrial Fibrillation and Flutter
This range includes codes for different types of atrial fibrillation, which may be secondary to thyroid disorders.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| E05.90 | Thyrotoxicosis without thyrotoxic crisis with atrial fibrillation | Use when AFib is directly caused by thyrotoxicosis without crisis. |
|
| I48.91 | Unspecified atrial fibrillation | Use when AFib type is not specified. |
|
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 thyroid afib
Essential facts and insights about Thyroid-Related Atrial Fibrillation
Primary ICD-10-CM Codes for thyroid afib
Decision Criteria
clinical Criteria
- TSH and Free T4 levels indicating hyperthyroidism
documentation Criteria
- Explicit link between AFib and thyrotoxicosis
Applicable To
- Hyperthyroidism with atrial fibrillation
Excludes
- Thyrotoxic crisis (E05.01)
Clinical Validation Requirements
- TSH <0.4 µIU/mL
- Free T4 >1.8 ng/dL
- Documentation linking AFib to thyrotoxicosis
Code-Specific Risks
- Incorrectly coding AFib without linking to thyroid condition
Coding Notes
- Ensure thyroid function tests confirm hyperthyroidism.
I48.91 - Unspecified atrial fibrillation
Use when AFib type is not specified.
Applicable To
- AFib not otherwise specified
Excludes
- Specific types of AFib (e.g., persistent, paroxysmal)
Clinical Validation Requirements
- EKG confirmation of AFib
Coding Notes
Avoid using if specific AFib type is documented.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Persistent atrial fibrillation
I48.19Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Thyroid-Related Atrial Fibrillation to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code E05.90.
Impact
Clinical: Misrepresentation of patient's condition, Regulatory: Potential for audit discrepancies, Financial: Incorrect reimbursement
Mitigation Strategy
Review EKG and clinical notes for AFib type, Ensure documentation specifies AFib type
Impact
Reimbursement: Incorrect DRG assignment, affecting payment, Compliance: Potential for audit flags, Data Quality: Inaccurate clinical data representation
Mitigation Strategy
Ensure documentation explicitly links AFib to thyrotoxicosis.
Impact
Failure to document explicit linkage between thyroid condition and AFib
Mitigation Strategy
Educate providers on documentation requirements
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 Thyroid-Related Atrial Fibrillation, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Thyroid-Related Atrial Fibrillation
Use these documentation templates to ensure complete and accurate documentation for Thyroid-Related Atrial Fibrillation. These templates include all required elements for proper coding and billing.
Hyperthyroidism with persistent AFib
Specialty: EndocrinologyRequired Elements
- Thyroid function test results
- EKG confirmation of AFib
- Linkage of AFib to thyroid condition
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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