J42
BillableUnspecified chronic bronchitis
J42 is the ICD-10-CM code for Unspecified chronic bronchitis. It is a billable, specific code valid for reimbursement.
- Status
- Billable
- Chapter
- J00-J99
- Edition
- FY2026
J00-J99 Diseases of the respiratory system
What this means — in plain language
MedlinePlus · NIHWhat is chronic bronchitis? Chronic bronchitis is a type of COPD (chronic obstructive pulmonary disease). COPD is a group of lung diseases that make it hard to breathe and get worse over time. The other main type of COPD is emphysema . Most people with COPD have both emphysema and chronic bronchitis, but how severe each type is can be different from person to person. Chronic bronchitis is inflammation (swelling) and…
Read more about Chronic Bronchitis at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Chronic bronchitis NOS
- •Chronic tracheitis
- •Chronic tracheobronchitis
Excludes1 — not coded here
- •bronchiolitis obliterans and bronchiolitis obliterans syndrome (J44.81)
- •chronic asthmatic bronchitis (J44.-)
- •chronic bronchitis with airways obstruction (J44.-)
- •chronic emphysematous bronchitis (J44.-)
- •chronic obstructive pulmonary disease NOS (J44.9)
- •simple and mucopurulent chronic bronchitis (J41.-)
Use additional code
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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