ICD-10-CM B04 is the diagnosis code for Monkeypox. 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 B04 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, B04 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
B04 is the ICD-10-CM diagnosis code for "Monkeypox". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
B04 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 B04 when the patients documented diagnosis matches "Monkeypox" 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 Monkeypox is B04.
Yes, B04 can be used as a primary diagnosis code since it is billable and specific.
B04 is in Chapter 1 of the ICD-10-CM Tabular List.
Yes, B04 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.