J43.9 (Emphysema, unspecified) compared with J98.2 (Interstitial emphysema), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Not coded here — these two are mutually exclusive.
“interstitial emphysema (J98.2)”
An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.
Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a
No — do not report together. J43.9 carries an Excludes1 note covering J98.2: “interstitial emphysema (J98.2)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
| J43.9Emphysema, unspecified | J98.2Interstitial emphysema | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | J00-J99 — Diseases of the Respiratory System (J00-J99) | J00-J99 — Diseases of the Respiratory System (J00-J99) |
| Definition | Emphysema, unspecified is a billable ICD-10-CM diagnosis code (J43.9). | Interstitial emphysema is a billable ICD-10-CM diagnosis code (J98.2). |
| Includes | Bullous emphysema (lung)(pulmonary) Emphysema (lung)(pulmonary) NOS Emphysematous bleb Vesicular emphysema (lung)(pulmonary) | Mediastinal emphysema |
| Use additional code | — | code to identify: exposure to environmental tobacco smoke (Z77.22) exposure to tobacco smoke in the perinatal period (P96.81) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources