ICD-10 Code J84.89 – Other specified interstitial pulmonary diseases (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J84.89 – Other specified interstitial pulmonary diseases
What it is
J84.89 identifies interstitial lung disease that does not fit a more specific ICD-10 category. Use it when the record clearly names an “other specified” interstitial pulmonary disorder.
Clinical signs
Clinical features vary; refer to documentation. Interstitial lung disease commonly presents with chronic cough, shortness of breath, and diffuse lung findings on imaging or examination.
When to use this code
Use J84.89 when the clinician documents a specific interstitial pulmonary condition that is not otherwise classified in ICD-10-CM. It may also apply when the note uses “other specified interstitial pulmonary disease” or a similar phrase. Check documentation to confirm the diagnosis is not better captured by a more specific code.
Do not use for
Do not use this code for interstitial pulmonary diseases with a more specific ICD-10-CM option, or when the chart only says “interstitial lung disease” without further detail. Check documentation.
Coding tip
Confirm the exact pulmonary diagnosis wording; if the condition is unspecified or more specifically named elsewhere, choose the better-matched code.