Emphysema (J43)
Clinical Information
Emphysema - A pathological accumulation of air in tissues or organs.
Emphysematous Cholecystitis - A variant of acute cholecystitis with inflammation of the GALLBLADDER that is characterized by the pockets of gas in the gallbladder wall. It is due to secondary infection caused by gas-forming organisms, and has a high risk of perforation.
Gallbladder - A storage reservoir for BILE secretion. Gallbladder allows the delivery of bile acids at a high concentration and in a controlled manner, via the CYSTIC DUCT to the DUODENUM, for degradation of dietary lipid.
Mediastinal Emphysema - Presence of air in the mediastinal tissues due to leakage of air from the tracheobronchial tree, usually as a result of trauma.
Pneumonia, Atypical Interstitial, of Cattle - A cattle disease of uncertain cause, probably an allergic reaction.
Pulmonary Emphysema - Enlargement of air spaces distal to the TERMINAL BRONCHIOLES where gas-exchange normally takes place. This is usually due to destruction of the alveolar wall. Pulmonary emphysema can be classified by the location and distribution of the lesions.
Subcutaneous Emphysema - Presence of air or gas in the subcutaneous tissues of the body.
Instructional Notations
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- compensatory emphysema J98.3
- emphysema due to inhalation of chemicals, gases, fumes or vapors J68.4
- interstitial emphysema J98.2
- mediastinal emphysema J98.2
- neonatal interstitial emphysema P25.0
- surgical subcutaneous emphysema T81.82
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.