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ICD-10 Coding for Chickenpox(B01.9, B01.0, B01.2)

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

Also known as:

VaricellaVaricella zoster virus infection

Related ICD-10 Code Ranges

Complete code families applicable to Chickenpox

B01Primary Range

Varicella

This range includes all codes related to chickenpox and its complications.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
B01.9Varicella without complicationUse for cases of chickenpox without any documented complications.
  • Presence of vesicular rash
  • Fever
  • Positive VZV PCR
B01.0Varicella meningitisUse when varicella is complicated by meningitis.
  • Headache
  • Nuchal rigidity
  • CSF pleocytosis
B01.2Varicella pneumoniaUse when varicella is complicated by pneumonia.
  • Oxygen saturation <92%
  • Infiltrates on chest X-ray

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 chickenpox

Essential facts and insights about Chickenpox

The ICD-10 code for uncomplicated chickenpox is B01.9. Use B01.0 for meningitis and B01.2 for pneumonia complications.

Primary ICD-10-CM Codes for chickenpox

Varicella without complication
Billable Code

Decision Criteria

clinical Criteria

  • No complications such as pneumonia or encephalitis.

Applicable To

  • Uncomplicated chickenpox

Excludes

  • Herpes zoster (B02.-)

Clinical Validation Requirements

  • Presence of vesicular rash
  • Fever
  • Positive VZV PCR

Code-Specific Risks

  • Misclassification if complications are present but not documented.

Coding Notes

  • Ensure no complications are documented before using this code.

Differential Codes

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

Zoster [herpes zoster]

B02
Presence of dermatomal rash and history of prior varicella.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Chickenpox to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code B01.9.

Impact

Clinical: Misrepresents current patient status., Regulatory: Non-compliance with coding guidelines., Financial: Potential for denied claims.

Mitigation Strategy

Verify active infection status, Use history code if resolved

Impact

Reimbursement: Incorrect coding may affect payment rates., Compliance: May lead to compliance issues with coding standards., Data Quality: Impacts accuracy of patient records.

Mitigation Strategy

Verify rash distribution and patient history.

Impact

Failure to document complications can lead to audit issues.

Mitigation Strategy

Ensure thorough documentation of all symptoms and 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 Chickenpox, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Chickenpox

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

Pediatric varicella case

Specialty: Pediatrics

Required Elements

  • Rash description
  • Fever pattern
  • Complication assessment
  • Lab confirmation

Example Documentation

Patient presents with 300+ vesicular lesions, fever of 102°F, no respiratory distress. VZV PCR positive.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has rash and fever.
Good Documentation Example
Patient has 300+ vesicular lesions, fever of 102°F, VZV PCR positive.
Explanation
The good example provides specific details and lab confirmation.

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

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