ICD-10-CM B01.9 is the diagnosis code for Varicella without complication. This code falls under the section "Viral infections characterized by skin and mucous membrane lesions" within Chapter 1 — Certain infectious and parasitic diseases (A00-B99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where B01.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, B01.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
B01.9 is the ICD-10-CM diagnosis code for "Varicella without complication". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of B01.9 is B01 ("Varicella [chickenpox]"). B01.9 provides a more specific classification within this category.
B01.9 is located in Section B00-B09 — "Viral infections characterized by skin and mucous membrane lesions" within Chapter 1 of the ICD-10-CM Tabular List.
Use B01.9 when the patients documented diagnosis matches "Varicella without complication" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Varicella without complication is B01.9.
Yes, B01.9 can be used as a primary diagnosis code since it is billable and specific.
B01.9 is in Chapter 1 of the ICD-10-CM Tabular List.
Yes, B01.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.