ICD-10 Code J70.1 – Chronic and other pulmonary manifestations due to radiation (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J70.1 – Chronic and other pulmonary manifestations due to radiation
What it is
J70.1 identifies lung injury or chronic pulmonary changes caused by prior radiation exposure. Use it when the record links the respiratory condition directly to radiation therapy or other radiation exposure.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include chronic cough, shortness of breath, or imaging changes consistent with radiation-related lung damage.
When to use this code
Use J70.1 when the provider documents chronic pulmonary manifestations due to radiation, such as radiation pneumonitis or fibrosis after treatment. Code it only when the causal relationship is clearly stated in the chart. Check documentation if the lung disorder is described without a radiation link.
Do not use for
Do not use this code for acute radiation sickness or for lung disease with no documented radiation cause. If the pulmonary condition is due to another etiology, choose the more specific diagnosis.
Coding tip
Look for explicit wording such as “due to radiation” or “radiation-induced” before assigning J70.1.