There are 2 ICD-9-CM codes below 492 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
Diagnosis Definition(s)
subcategory of chronic obstructive pulmonary disease; characterized by anatomic alterations of the lungs, such as the enlargement of airspaces and destruction of alveolar walls.
Pulmonary emphysema is a disorder affecting the alveoli (tiny air sacs) of the lungs. The transfer of oxygen and carbon dioxide in the lungs takes place in the walls of the alveoli. In emphysema, the alveoli become abnormally inflated, damaging their walls and making it harder to breathe. People who smoke or have chronic bronchitis have an increased risk of emphysema.
A condition of the lung characterized by increase beyond normal in the size of air spaces distal to the terminal bronchioles, either from dilatation of the alveoli or from destruction of their walls.
A subcategory of chronic obstructive pulmonary disease (COPD). It occurs in people who smoke and suffer from chronic bronchitis. It is characterized by inflation of the alveoli, alveolar wall damage, and reduction in the number of alveoli, resulting in difficulty breathing. Alveoli are the vital lung structures where the transfer of oxygen and carbon dioxide takes place. -- 2004
2011 ICD-9-CM Diagnosis Code 492
