ICD-10 Code J84.0 – Alveolar and parieto-alveolar conditions (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J84.0 – Alveolar and parieto-alveolar conditions
What it is
J84.0 identifies alveolar and parieto-alveolar lung conditions, a category used for disorders affecting the air sacs and nearby lung tissue. Use it when the record names this specific condition rather than a more detailed diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Records may describe abnormal lung findings, imaging changes, or pathology involving the alveoli and adjacent interstitial tissue.
When to use this code
Use this code when the clinician documents alveolar and parieto-alveolar conditions and does not provide a more specific diagnosis. It may apply when the chart uses this exact term in imaging, pathology, or discharge documentation. Check the note for a clearer underlying disorder before assigning J84.0.
Do not use for
Do not use J84.0 for unrelated interstitial lung diseases with a more specific code available. If the documentation identifies pneumonia, edema, or another defined lung disorder, code that condition instead.
Coding tip
Code J84.0 only when the provider’s wording matches this term and no more specific diagnosis is documented.