ICD-10 Coding for Nut Allergy(Z91.018, T78.05XA)
Complete ICD-10-CM coding and documentation guide for Nut Allergy. Includes clinical validation requirements, documentation requirements, and coding pitfalls.
Also known as:
Related ICD-10 Code Ranges
Complete code families applicable to Nut Allergy
Z91.0-Z91.09Primary Range
Personal history of allergy to other foods
This range includes codes for personal history of allergies to specific foods, including nuts.
Anaphylactic reaction due to adverse food reaction
This range includes codes for anaphylactic reactions due to food allergies, including nuts.
Code Comparison: When to Use Each Code
Compare key differences between these codes to ensure accurate selection
| Code | Description | When to Use | Key Documentation |
|---|---|---|---|
| Z91.018 | Allergy to other foods (tree nuts) | Use for patients with a confirmed allergy to tree nuts. |
|
| T78.05XA | Anaphylactic reaction due to tree nuts | Use for acute anaphylactic reactions specifically due to tree nuts. |
|
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 nut allergy
Essential facts and insights about Nut Allergy
Primary ICD-10-CM Codes for nut allergy
Decision Criteria
clinical Criteria
- Confirmed IgE-mediated reaction to tree nuts
Applicable To
- Tree nut allergy
Excludes
- Peanut allergy (Z91.010)
Clinical Validation Requirements
- Documented IgE-mediated reaction history
- Skin test ≥3mm wheal
- Specific IgE ≥0.35 kU/L
- Positive oral challenge
Code-Specific Risks
- Confusing with peanut allergy
- Using without documented confirmation
Coding Notes
- Ensure specific nut type is documented.
T78.05XA - Anaphylactic reaction due to tree nuts
Use for acute anaphylactic reactions specifically due to tree nuts.
Applicable To
- Anaphylaxis due to tree nuts
Excludes
- Anaphylaxis due to peanuts (T78.01XA)
Clinical Validation Requirements
- Objective signs (hypotension, stridor, angioedema)
- Temporal relationship to exposure
- Exclusion of alternative diagnoses
Coding Notes
Sequence before status codes in active treatment encounters.
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 Nut Allergy to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code Z91.018.
Impact
Clinical: Inappropriate management and treatment., Regulatory: Non-compliance with coding standards., Financial: Potential billing errors.
Mitigation Strategy
Educate staff on the differences between peanut and tree nut allergies., Use decision support tools to guide code selection.
Impact
Reimbursement: May lead to incorrect DRG assignment., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate allergy records.
Mitigation Strategy
Always document the specific nut type, such as almond or walnut.
Impact
Inadequate documentation of specific allergens.
Mitigation Strategy
Implement standardized templates for allergy documentation.
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 Nut Allergy, with expert answers to help guide accurate code selection and documentation.
Documentation Templates for Nut Allergy
Use these documentation templates to ensure complete and accurate documentation for Nut Allergy. These templates include all required elements for proper coding and billing.
Initial evaluation for nut allergy
Specialty: Allergy and ImmunologyRequired Elements
- Specific nut type
- Reaction characteristics
- Diagnostic confirmation
- Current management plan
Example Documentation
Examples: Poor vs. Good Documentation
Poor Documentation Example
Good Documentation Example
Explanation
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