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ICD-10 Coding for Acute Urticaria(L50.9, L50.0)

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

Also known as:

HivesAcute Hives

Related ICD-10 Code Ranges

Complete code families applicable to Acute Urticaria

L50-L50.9Primary Range

Urticaria and erythema

This range includes codes for different types of urticaria, including acute and chronic forms.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
L50.9Urticaria, unspecifiedUse when acute urticaria is present without a specific trigger identified.
  • Presence of pruritic wheals
  • Duration less than 6 weeks
L50.0Allergic urticariaUse when urticaria is due to an identified allergen.
  • Elevated IgE levels
  • Identified allergen trigger

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 acute urticaria

Essential facts and insights about Acute Urticaria

The ICD-10 code for acute urticaria is L50.9 when no specific trigger is identified. Use L50.0 for allergic urticaria.

Primary ICD-10-CM Codes for acute urticaria

Urticaria, unspecified
Billable Code

Decision Criteria

clinical Criteria

  • Symptoms present for less than 6 weeks with no identifiable trigger.

Applicable To

  • Acute urticaria without identified trigger

Excludes

  • Urticarial vasculitis (L95.8)

Clinical Validation Requirements

  • Presence of pruritic wheals
  • Duration less than 6 weeks

Code-Specific Risks

  • Misclassification if duration exceeds 6 weeks

Coding Notes

  • Ensure documentation specifies acute nature and lack of identifiable trigger.

Ancillary Codes

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

Allergic reaction, unspecified

T78.4
Use only if anaphylaxis is confirmed.

Adverse effect of penicillins

T36.0X5A
Use when urticaria is due to penicillin.

Differential Codes

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

Other urticaria

L50.8
Use for chronic urticaria or specific subtypes not covered by other codes.

Idiopathic urticaria

L50.1
Use when no allergen or specific cause is identified.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Acute Urticaria to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code L50.9.

Impact

Clinical: Leads to inappropriate treatment plans., Regulatory: Non-compliance with coding guidelines., Financial: Potential claim denials.

Mitigation Strategy

Always document symptom duration., Review patient history for previous episodes.

Impact

Reimbursement: Incorrect coding can lead to denied claims., Compliance: Misclassification affects compliance with coding standards., Data Quality: Impacts accuracy of patient records.

Mitigation Strategy

Ensure duration is documented as less than 6 weeks for acute.

Impact

Inadequate documentation of symptom duration can lead to audit flags.

Mitigation Strategy

Ensure all records specify the exact duration of symptoms.

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 Acute Urticaria, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Acute Urticaria

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

Acute allergic urticaria

Specialty: Allergy and Immunology

Required Elements

  • Onset and duration of symptoms
  • Identified triggers
  • Physical exam findings
  • Response to treatment

Example Documentation

Patient presents with pruritic wheals 2 hours after eating peanuts. No angioedema. Treated with antihistamines.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has hives.
Good Documentation Example
Patient presents with pruritic wheals on arms and trunk, onset 2 hours after peanut ingestion.
Explanation
The good example provides specific details about onset, location, and potential trigger.

Need help with ICD-10 coding for Acute Urticaria? Ask your questions below.

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