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ICD-10 Coding for Fever Blister(B00.1)

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

Also known as:

Cold SoreHerpes Labialis

Related ICD-10 Code Ranges

Complete code families applicable to Fever Blister

B00.0-B00.9Primary Range

Herpesviral infections

This range includes codes for herpesviral infections, including herpes labialis (fever blisters).

Key Information: ICD-10 code for fever blister

Essential facts and insights about Fever Blister

The ICD-10 code for fever blister, also known as herpes labialis, is B00.1. This code is used for oral-labial HSV-1 lesions with vesicles and crusting.

Primary ICD-10-CM Code for fever blister

Herpesviral vesicular dermatitis
Billable Code

Decision Criteria

clinical Criteria

  • Presence of vesicular lesions on lips with prodromal symptoms.

documentation Criteria

  • Documented history of recurrent episodes or lab confirmation.

Applicable To

  • Herpes labialis
  • Fever blisters

Excludes

  • Herpesviral ocular disease (B00.5)
  • Herpesviral encephalitis (B00.4)

Clinical Validation Requirements

  • Prodromal tingling
  • Clustered vesicles on lips
  • Recurrent episodes
  • HSV-1 confirmed by PCR

Code-Specific Risks

  • Confusing with other HSV manifestations
  • Using unspecified codes like B00.9

Coding Notes

  • Ensure documentation specifies location and symptoms. Avoid unspecified codes.

Ancillary Codes

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

Viral agents as the cause of diseases classified elsewhere

B97.3
Use as secondary code if HSV-1 is confirmed by lab tests.

Differential Codes

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

Herpesviral infection of genitalia and urogenital tract

A60.0
Use for genital HSV lesions, not oral.

Herpesviral ocular disease

B00.5
Use if ocular involvement is confirmed.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Fever Blister to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code B00.1.

Impact

Clinical: May lead to incorrect treatment decisions., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials.

Mitigation Strategy

Use specific terms like 'herpes labialis'., Include detailed symptom descriptions.

Impact

Reimbursement: Incorrect code may lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate data on herpes infections.

Mitigation Strategy

Use B00.1 for specific site documentation.

Impact

Lack of specific lesion documentation can lead to audit issues.

Mitigation Strategy

Ensure detailed documentation of lesion location and 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 Fever Blister, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Fever Blister

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

Primary Care Visit for Fever Blister

Specialty: Family Medicine

Required Elements

  • Location of lesions
  • Symptoms and prodromal signs
  • Recurrent episode history
  • Lab confirmation if available

Example Documentation

Patient presents with multiple vesicular lesions on the vermilion border of the lower lip, reports prodromal tingling 2 days prior, history of recurrent HSV-1 confirmed by PCR in 2024.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has cold sores.
Good Documentation Example
3-mm grouped vesicles on right upper vermilion border with yellow crusting, pt reports prodrome of burning pain 2 days prior, 4th recurrence in 12 months.
Explanation
The good example provides specific details about the lesion's location, symptoms, and recurrence history.

Need help with ICD-10 coding for Fever Blister? Ask your questions below.

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