ICD-10 Code J41.8 – Mixed Simple and Mucopurulent Chronic Bronchitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J41.8 – Mixed simple and mucopurulent chronic bronchitis
What it is
J41.8 identifies chronic bronchitis with both simple and mucopurulent features. Use it when documentation shows a long-term bronchial inflammation with persistent cough and mucus production, without evidence of a more specific chronic obstructive diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include chronic productive cough, recurring sputum, and signs of ongoing bronchial irritation or infection. You may also see repeated exacerbations noted in the record.
When to use this code
Use this code when the provider documents mixed simple and mucopurulent chronic bronchitis, or clearly describes both chronic mucus production and mucopurulent sputum. It is appropriate for outpatient, inpatient, or problem-list coding when the diagnosis is established. Check documentation if the note instead supports another chronic bronchitis subtype.
Do not use for
Do not use J41.8 for acute bronchitis, unspecified cough, or chronic obstructive pulmonary disease unless the provider documents the condition separately. If the record only says “bronchitis” without qualification, check documentation.
Coding tip
Code the exact bronchitis type documented; if the note does not clearly support “mixed simple and mucopurulent,” verify the provider’s wording before assigning J41.8.