Diseases of the respiratory system (J00–J99)

Chapter 10 (J00–J99) covers a wide range of respiratory system diseases, including conditions affecting the nose, throat, lungs, and other parts of the breathing system. These codes are used to classify and report illnesses like infections, chronic respiratory diseases, and disorders related to breathing and the respiratory tract.

This chapter includes codes for acute respiratory infections such as the common cold and influenza, as well as chronic conditions like asthma, bronchitis, and chronic obstructive pulmonary disease (COPD). It also encompasses lung infections like pneumonia and tuberculosis, along with diseases that affect the pleura and other respiratory structures. Medical coders and healthcare professionals use these codes to document conditions that involve inflammation, obstruction, infections, or other respiratory impairments. These codes support accurate diagnosis, treatment planning, and billing related to respiratory health conditions, emphasizing the importance of precise classification for pulmonary and airway disorders.