Immersion foot, left foot, sequela

This code signifies the long-term or residual effects of immersion foot (trench foot) specifically affecting the left foot. These sequelae can include chronic pain, numbness, hypersensitivity, skin changes, or impaired circulation that persist after the initial acute injury has resolved. It indicates that the patient is experiencing ongoing complications directly attributable to a past episode of prolonged exposure to cold and wet conditions.

Use this code when documenting a patient presenting with persistent symptoms or conditions in their left foot that are a direct consequence of a previously diagnosed immersion foot injury. This applies to follow-up visits where the focus is on managing these chronic issues, rather than the acute phase of the injury. It should be used when the acute phase of immersion foot has passed, and the current encounter addresses the lasting impact.

• Always ensure documentation clearly links the current left foot condition to a prior immersion foot injury.
• This code requires a seventh character 'S' for sequela, indicating the long-term effects are being treated.
• Do not use this code for the initial or acute treatment of immersion foot; use the appropriate acute phase code instead.