Corrosion involving larynx and trachea w lung, subs encntr

This code signifies a chemical burn (corrosion) affecting the larynx, trachea, and lungs, occurring during a follow-up visit after initial treatment. It indicates ongoing care for the sequelae or complications of the initial corrosive injury to these respiratory structures.

Apply this code for patients presenting for subsequent treatment, monitoring, or management of complications arising from a corrosive injury that initially damaged the larynx, trachea, and lungs. This includes scenarios such as follow-up for airway strictures, pulmonary fibrosis, or persistent respiratory symptoms related to the initial burn.

• Requires a seventh character "D" for subsequent encounter, indicating ongoing care.
• Do not use for the initial treatment of the corrosive injury; refer to codes with the "A" seventh character.
• Consider additional codes for specific complications (e.g., J98.01 for tracheostomy malfunction, J43.9 for emphysema) if documented.