ICD-10 Code J20.3 – Acute bronchitis due to coxsackievirus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J20.3 – Acute bronchitis due to coxsackievirus
What it is
J20.3 identifies acute bronchitis caused by coxsackievirus. Use it when the record shows a short-term bronchial infection specifically linked to this viral agent.
Clinical signs
Clinical features vary; refer to documentation. Acute bronchitis commonly presents with cough and other lower respiratory symptoms, and the provider must document coxsackievirus as the cause.
When to use this code
Use J20.3 when the clinician diagnoses acute bronchitis and clearly attributes it to coxsackievirus. It is appropriate for outpatient, inpatient, or emergency records when the etiology is stated in the chart. If the cause is not specified, check documentation before assigning this code.
Do not use for
Do not use this code for bronchitis without a documented coxsackievirus cause, or for chronic bronchitis. If the record describes another viral agent, use the code that matches that organism.
Coding tip
Code the documented organism exactly; if the pathogen is unclear, query or check documentation before selecting J20.3.