Unspecified injury of lung, unilateral, sequela

This code signifies a long-term or late-effect complication resulting from an unspecified injury to a single lung. This could include conditions like chronic pain, reduced lung function, or scarring that developed after the initial acute lung trauma has resolved. The specific nature of the original injury is not documented or is unknown.

Use this code when a patient presents with a current condition directly attributable to a past, unspecified injury to one lung. This is appropriate when the acute phase of the injury has passed, and the current encounter addresses the residual effects. Examples include follow-up for chronic respiratory issues stemming from an old lung contusion or laceration where the exact initial injury details are no longer available.

• Always sequence this code after the code describing the specific sequela (e.g., chronic respiratory failure, pleural adhesions).
• Ensure documentation clearly links the current condition to a past lung injury and specifies it was unilateral.
• Avoid using this code if the original injury is still acute or if the specific type of lung injury is known and can be coded more precisely.