ICD-10 Code J47.0 – Bronchiectasis with acute lower respiratory infection (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J47.0 – Bronchiectasis with acute lower respiratory infection
What it is
J47.0 identifies bronchiectasis complicated by an acute lower respiratory infection. Use it when the chart shows both the chronic airway dilation and a current infectious flare affecting the lower respiratory tract.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe chronic cough, sputum production, recurrent chest infections, or worsening respiratory symptoms during an acute infectious episode.
When to use this code
Use J47.0 when the provider documents bronchiectasis and specifies an acute lower respiratory infection such as an acute infectious exacerbation. The infection must be current, not historical, and linked to the bronchiectasis in the note. Check documentation if the organism or exact infection type is unclear.
Do not use for
Do not use this code for bronchiectasis without an acute lower respiratory infection. It is also not appropriate when the record only shows upper respiratory infection or nonspecific respiratory symptoms.
Coding tip
Confirm that the provider connects the acute infection to bronchiectasis before assigning J47.0.