Corrosion of third degree of left wrist, sequela

This diagnosis code indicates a severe chemical burn affecting the entire thickness of the skin and underlying tissues of the left wrist. The term "corrosion" specifically refers to a chemical burn, and "third degree" signifies full-thickness tissue destruction. "Sequela" indicates that this code is used for complications or conditions arising directly from the initial burn, after the acute phase of healing has passed.

This code is appropriate for documenting long-term effects, complications, or residual conditions stemming from a third-degree chemical burn to the left wrist. Examples include chronic pain, scarring, contractures, functional impairment, or other persistent issues that are a direct result of the original injury. It should be used when the patient is presenting for treatment of these lasting effects, not for the initial acute burn.

• Always ensure documentation clearly specifies "left wrist" and "third degree" for accurate code assignment.
• The "S" seventh character for sequela is crucial and indicates that the patient is being treated for a complication or late effect of the original injury.
• Do not use this code for the initial encounter or active treatment of the acute chemical burn; instead, use an acute burn code with the appropriate seventh character.