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Home/Diagnosis/ICD-10 Coding for Varicella Titer

ICD-10 Coding for Varicella Titer

Z20.820
Z23

Complete ICD-10-CM coding and documentation guide for icd-10 coding for varicella titer includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Chickenpox Titer
Varicella-Zoster Antibody Test
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Key Information: ICD-10 Coding for Varicella Titer

Essential facts and insights about ICD-10 Coding for Varicella Titer

Use ICD-10 code Z20.820 for contact with and (suspected) exposure to varicella, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Contact with and (suspected) exposure to varicella

Billable Code
Z20.820
Billable

Diagnostic Criteria

  • • Confirmed exposure to varicella

Applicable To

  • • Exposure to varicella

Important Notes

  • • Ensure documentation specifies exposure context.

Encounter for immunization

Billable Code
Z23
Billable

Diagnostic Criteria

  • • Pre-vaccination screening for varicella immunity

Applicable To

  • • Immunization encounter

Important Notes

  • • Ensure documentation specifies immunization context.
Ancillary Codes

Additional codes that may be used with this diagnosis

86787

Varicella-zoster virus antibody, IgG

Use with Z20.820 for exposure testing.

Frequently Asked Questions

What is the ICD-10 code for varicella titer?

The ICD-10 code for varicella titer related to exposure is Z20.820. For routine screening, use Z11.3, and for pre-vaccination, use Z23.

How do you document a varicella titer?

Document the quantitative IgG titer result, exposure context if applicable, and follow-up actions for equivocal results.

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