ICD-10 Code J68.3 – Other acute and subacute respiratory conditions due to chemicals, gases, fumes and vapors (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J68.3 – Other acute and subacute respiratory conditions due to chemicals, gases, fumes and vapors
What it is
This code identifies a short-term or recent respiratory condition caused by exposure to chemicals, gases, fumes, or vapors. It applies when the documentation describes an acute or subacute reaction, but not a more specific named disorder.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include cough, wheezing, shortness of breath, throat irritation, or chest discomfort after an exposure event.
When to use this code
Use J68.3 when the provider documents an acute or subacute respiratory condition linked to inhaled chemical irritants and does not name a more specific diagnosis. It is appropriate for exposure-related respiratory illness in the encounter note, occupational history, or discharge summary. Check documentation for the exact agent and timing.
Do not use for
Do not use this code for chronic respiratory disease, allergic asthma, or conditions unrelated to chemical inhalation. If the record identifies a more specific diagnosis, code that condition instead.
Coding tip
Confirm the exposure source and the provider’s wording before assigning J68.3.