J84 vs J98.2
J84 (Other interstitial pulmonary diseases) 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.
Can these codes be reported together?
No — do not report together. J84 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).
Side by side
| J84Other interstitial pulmonary diseases | J98.2Interstitial emphysema | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | J00-J99 — Diseases of the Respiratory System (J00-J99) | J00-J99 — Diseases of the Respiratory System (J00-J99) |
| Definition | Other interstitial pulmonary diseases is a non-billable ICD-10-CM category code (J84). | Interstitial emphysema is a billable ICD-10-CM diagnosis code (J98.2). |
| Includes | — | 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