J43Emphysema

J43 is the ICD-10-CM diagnosis code for emphysema. It belongs to block J40-J4B (chronic lower respiratory diseases) and chapter 10 (diseases of the respiratory system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: J43.0 (syndrome]), J43.1 (emphysema), J43.2 (emphysema), J43.8 (emphysema) and J43.9 (unspecified).

Don't report J43 together with the conditions in its Excludes1 note: compensatory emphysema (J98.3), interstitial emphysema (J98.2), mediastinal emphysema (J98.2), neonatal interstitial emphysema (P25.0) and 1 more.

The conditions in its Excludes2 note aren't part of J43, but may be coded alongside it if the patient has both: emphysema due to inhalation of chemicals, gases, fumes or vapors (J68.4), emphysema with chronic (obstructive) bronchitis (J44.-), emphysematous (obstructive) bronchitis (J44.-) and traumatic subcutaneous emphysema (T79.7).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.