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ICD-10 Coding for Egg Allergy(Z91.012, T78.08XA)

Complete ICD-10-CM coding and documentation guide for Egg Allergy. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Egg HypersensitivityAllergy to Eggs

Related ICD-10 Code Ranges

Complete code families applicable to Egg Allergy

Z91.0-Z91.9Primary Range

Personal history of allergy to other foods, drugs, and biological substances

This range includes codes for documenting allergy status, including egg allergy.

Anaphylactic shock due to adverse food reaction

This range includes codes for acute anaphylactic reactions due to egg exposure.

Urticaria

This range includes codes for urticaria, which can occur as a reaction to egg exposure.

Vasomotor and allergic rhinitis

This range includes codes for allergic rhinitis, which can be triggered by egg ingestion.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
Z91.012Allergy to eggsUse for documenting known egg allergy without acute symptoms.
  • Positive IgE test for egg proteins
  • Documented history of allergic reaction to egg
T78.08XAAnaphylactic reaction due to eggs, initial encounterUse for acute anaphylactic reactions to egg, initial encounter.
  • Documented anaphylactic symptoms post egg ingestion
  • Emergency treatment administered

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 egg allergy

Essential facts and insights about Egg Allergy

The ICD-10 code for egg allergy is Z91.012, used for documenting a known allergy to eggs.

Primary ICD-10-CM Codes for egg allergy

Allergy to eggs
Billable Code

Decision Criteria

clinical Criteria

  • Presence of IgE-mediated symptoms after egg exposure

documentation Criteria

  • Specific mention of 'egg allergy' or 'egg hypersensitivity'

Applicable To

  • Egg hypersensitivity

Excludes

  • Non-IgE mediated food intolerance (K90.4)

Clinical Validation Requirements

  • Positive IgE test for egg proteins
  • Documented history of allergic reaction to egg

Code-Specific Risks

  • Misclassification as intolerance
  • Lack of supporting IgE test documentation

Coding Notes

  • Ensure documentation specifies 'allergy to eggs' or 'egg hypersensitivity'.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Allergic urticaria

L50.0
Use when urticaria is present as a reaction to egg.

Allergic rhinitis due to food

J30.5
Use when rhinitis symptoms are triggered by egg ingestion.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Non-IgE mediated food intolerance

K90.4
Used for gastrointestinal symptoms without IgE-mediated reactions.

Allergy to eggs

Z91.012
Use for non-anaphylactic allergy status documentation.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Egg Allergy to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code Z91.012.

Impact

Clinical: Misrepresents patient's allergy status., Regulatory: Non-compliance with coding standards., Financial: Potential claim denials.

Mitigation Strategy

Verify IgE test results before coding, Educate staff on allergy vs. intolerance

Impact

Reimbursement: Incorrect coding may lead to denied claims., Compliance: Misclassification can result in compliance issues., Data Quality: Impacts the accuracy of patient allergy records.

Mitigation Strategy

Use Z91.012 for IgE-mediated allergy and K90.4 for intolerance.

Impact

Reimbursement: May affect billing for emergency services., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate tracking of patient encounters.

Mitigation Strategy

Specify initial or subsequent encounter in documentation.

Impact

Inadequate documentation of allergy status and reactions.

Mitigation Strategy

Implement standardized templates and verify IgE test results.

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 Egg Allergy, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Egg Allergy

Use these documentation templates to ensure complete and accurate documentation for Egg Allergy. These templates include all required elements for proper coding and billing.

Routine Allergy Status Documentation

Specialty: Allergy and Immunology

Required Elements

  • Patient history of egg exposure
  • IgE test results
  • Symptoms and reaction details

Example Documentation

Patient reports hives after egg consumption. IgE test positive for egg white.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has egg sensitivity.
Good Documentation Example
Patient has IgE-mediated allergy to egg white, confirmed by skin prick test.
Explanation
The good example provides specific test results and confirms IgE-mediated allergy.

Acute Anaphylactic Reaction Documentation

Specialty: Emergency Medicine

Required Elements

  • Description of anaphylactic symptoms
  • Treatment administered
  • Follow-up care instructions

Example Documentation

Patient experienced anaphylaxis after eating eggs. Epinephrine administered.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient had a reaction to eggs.
Good Documentation Example
Patient had anaphylactic shock after egg ingestion, treated with epinephrine.
Explanation
The good example specifies the type of reaction and treatment provided.

Need help with ICD-10 coding for Egg Allergy? Ask your questions below.

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