ICD-10 Code J70 – Respiratory conditions due to other external agents (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J70 – Respiratory conditions due to other external agents
What it is
J70 covers respiratory problems caused by outside agents, such as harmful fumes, dusts, or other exposures. Use it when the record links the lung or airway condition to an external cause and no more specific code fits.
Clinical signs
Clinical features vary; refer to documentation. You may see cough, shortness of breath, wheezing, or other respiratory irritation after exposure, with findings supporting a cause-and-effect relationship.
When to use this code
Use J70 when the clinician documents a respiratory condition due to an external agent and does not assign a more specific diagnosis. It is appropriate for exposure-related lung or airway disorders tied to the documented agent. Check documentation for the exact exposure and condition name.
Do not use for
Do not use this code for routine asthma, pneumonia, or chronic lung disease without a documented external cause. If a more specific respiratory diagnosis is recorded, code that condition instead.
Coding tip
Link the respiratory diagnosis to the documented external agent and verify whether a more specific J68-J70 code applies.