Acute pulmonary manifestations due to radiation

This code signifies the development of sudden-onset lung problems directly caused by exposure to radiation. These manifestations can include inflammation of the lung tissue (pneumonitis) or other acute respiratory symptoms that arise as a side effect of radiation therapy or accidental radiation exposure.

Apply this code when documentation clearly links acute pulmonary symptoms, such as dyspnea, cough, or infiltrates on imaging, to recent or ongoing radiation exposure. This is commonly seen in patients undergoing radiation therapy for cancer, where the lung tissue is within the radiation field.

• Ensure the documentation specifies "acute" pulmonary manifestations to differentiate from chronic radiation pneumonitis.
• Always sequence this code after the primary diagnosis for which the radiation therapy was administered (e.g., malignancy).
• Look for explicit statements from the physician attributing the lung condition to radiation.