ICD-10 Code J41.1 – Mucopurulent Chronic Bronchitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J41.1 – Mucopurulent chronic bronchitis
What it is
J41.1 identifies chronic bronchitis with persistent mucus and pus in the airways. Use it when the record describes a long-term bronchitic process with mucopurulent sputum.
Clinical signs
Common findings include chronic cough, sputum production, and evidence of ongoing airway inflammation. Clinical features vary; refer to documentation for the specific bronchitic pattern and whether infection is noted.
When to use this code
Use this code when the provider documents mucopurulent chronic bronchitis, chronic bronchitis with purulent sputum, or a similar equivalent diagnosis. It fits outpatient and inpatient records when the condition is established in the assessment. If the note only says cough or acute bronchitis, check documentation.
Do not use for
Do not use J41.1 for acute bronchitis, simple chronic bronchitis, or chronic obstructive bronchitis unless the record specifically supports mucopurulent chronic bronchitis. Check documentation when the wording is unclear.
Coding tip
Assign the code only when the provider clearly links chronic bronchitis with mucopurulent sputum or equivalent wording.