ICD-10 Coding for Angioneurotic Edema(T78.3XXA, D84.1)
Complete ICD-10-CM coding and documentation guide for Angioneurotic Edema. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Angioneurotic Edema
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| T78.3XXA | Angioneurotic edema, initial encounter | Use for initial encounters of angioedema not confirmed as hereditary. |
|
| D84.1 | Hereditary angioedema | Use when hereditary angioedema is confirmed by lab tests. |
|
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 angioneurotic edema
Essential facts and insights about Angioneurotic Edema
Primary ICD-10-CM Codes for angioneurotic edema
Decision Criteria
clinical Criteria
- Presence of allergen exposure and response to treatment
Applicable To
- Allergic angioedema
- Non-hereditary angioedema
Excludes
- Hereditary angioedema (D84.1)
Clinical Validation Requirements
- Documentation of allergen exposure
- Response to antihistamines
Code-Specific Risks
- Incorrectly using for hereditary cases
Coding Notes
- Ensure allergen exposure is documented.
D84.1 - Hereditary angioedema
Use when hereditary angioedema is confirmed by lab tests.
Applicable To
- Hereditary angioedema type I
- Hereditary angioedema type II
Excludes
- Allergic angioedema (T78.3XXA)
Clinical Validation Requirements
- Low C4 levels
- Low C1-INH antigen/function
Coding Notes
Ensure lab results are documented.
Ancillary Codes
Additional codes that should be used in conjunction with the main diagnosis codes when applicable.
Allergy status to ACE inhibitors
Z88.6Documentation & Coding Risks
Avoid these common documentation and coding issues when documenting Angioneurotic Edema to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code T78.3XXA.
Impact
Clinical: Inaccurate diagnosis, Regulatory: Non-compliance with coding standards, Financial: Potential claim denial
Mitigation Strategy
Standardize intake questions, Review documentation before coding
Impact
Reimbursement: Incorrect DRG assignment, Compliance: Potential audit failure, Data Quality: Inaccurate patient records
Mitigation Strategy
Use D84.1 when hereditary angioedema is confirmed.
Impact
Coding hereditary angioedema without lab confirmation.
Mitigation Strategy
Require lab results before coding.
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 Angioneurotic Edema, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Angioneurotic Edema
Use these documentation templates to ensure complete and accurate documentation for Angioneurotic Edema. These templates include all required elements for proper coding and billing.
Acute allergic angioedema
Specialty: Urgent CareRequired Elements
- History of allergen exposure
- Response to treatment
- Family history
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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