Contusion of lung, unilateral, subsequent encounter

This code signifies bruising of a single lung, indicating damage to the lung tissue and blood vessels without a laceration. It typically results from blunt chest trauma, leading to hemorrhage and edema within the lung parenchyma.

Apply this code for follow-up care of a patient previously diagnosed with a unilateral lung contusion. This includes subsequent visits for monitoring resolution, managing complications, or assessing ongoing symptoms related to the initial injury.

• Ensure documentation clearly states "unilateral" and confirms the encounter is for follow-up care.
• Do not use for initial encounters; a different seventh character (A) would be appropriate for the initial treatment.
• Look for documentation of blunt chest trauma as the mechanism of injury.