ICD-10 Code J43 – Emphysema (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J43 – Emphysema
What it is
J43 identifies emphysema, a chronic lung disease where air sacs are damaged and overexpanded. This reduces efficient airflow and makes breathing less effective.
Clinical signs
Common findings include shortness of breath, reduced exercise tolerance, and prolonged expiration. Clinical features vary; refer to documentation for the specific emphysema type and severity.
When to use this code
Use J43 when the provider documents emphysema as the diagnosis, including subtypes such as centrilobular, panlobular, or paraseptal emphysema if no more specific code is given. Code the documented condition, not just chronic dyspnea or smoking history. If the record does not clearly state emphysema, check documentation.
Do not use for
Do not use J43 for chronic bronchitis, asthma, or COPD unless emphysema is specifically documented. Do not code suspected emphysema without confirmed provider documentation.
Coding tip
Look for the exact emphysema type in the note, because a more specific J43 code may apply.