ICD-10 Code D02.2 – Carcinoma in situ of bronchus and lung (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D02.2 – Carcinoma in situ of bronchus and lung
What it is
D02.2 identifies a carcinoma in situ involving the bronchus or lung. This means abnormal cells are present in the lining but have not invaded deeper tissue.
Clinical signs
Clinical features vary; refer to documentation. Diagnosis is usually based on pathology or biopsy showing in situ malignant change without evidence of invasion.
When to use this code
Use this code when the record states carcinoma in situ of the bronchus or lung, including a confirmed in situ lesion in either site. You should code it when the provider documents noninvasive malignant disease and no invasive cancer is described. Check documentation if the site or behavior is unclear.
Do not use for
Do not use D02.2 for invasive lung cancer or metastatic disease. If the report describes a nonspecific pulmonary nodule or an uncertain lesion, check documentation before assigning this code.
Coding tip
Verify that the pathology or provider note explicitly supports “in situ” and the bronchus or lung site before coding D02.2.