ICD-10-CM > C00-D49 > D00-D09 > D02 > D02.2 D02.2 Carcinoma in situ of bronchus and lung Non-Billable/Non-Specific Codes D02.20Carcinoma in situ of unspecified bronchus and lungD02.21Carcinoma in situ of right bronchus and lungD02.22Carcinoma in situ of left bronchus and lung