ICD-10 Code J43.9 – Emphysema, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J43.9 – Emphysema, unspecified
What it is
J43.9 identifies emphysema when the record does not specify the type or cause. Use it for documented emphysema with no further detail available.
Clinical signs
Clinical features may include progressive shortness of breath, reduced exercise tolerance, and decreased breath sounds. Imaging or pulmonary testing may support emphysema, but clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents emphysema without naming a subtype such as centrilobular or panlobular. It also fits cases where the note confirms emphysema but the record lacks enough detail for a more specific code. Check documentation before defaulting to an unspecified code.
Do not use for
Do not use J43.9 for chronic bronchitis, COPD without emphysema, or asthma. If a more specific emphysema type is documented, code that diagnosis instead.
Coding tip
Query for the emphysema subtype before assigning J43.9, because unspecified coding should be a last resort.