500
ICD-9-CMThis code represents a chronic lung disease caused by the inhalation of coal dust, leading to inflammation, fibrosis, and impaired lung function. It is a form of occupational pneumoconiosis characterized by the presence of coal macules and nodules in the lungs.
Use this code for patients diagnosed with lung disease directly attributed to prolonged exposure to coal dust in an occupational setting. Documentation should clearly state the diagnosis of coal workers' pneumoconiosis, often supported by occupational history, chest imaging (e.g., X-ray, CT scan), and pulmonary function tests.
AI-generated reference — verify against official guidelines