Complex tear of lat mensc, current injury, left knee, init

This code signifies a severe, intricate tear affecting the lateral meniscus of the left knee, resulting from a recent injury. "Complex" indicates the tear involves multiple planes or patterns within the meniscus, making it more complicated than a simple linear or radial tear. This type of injury often leads to significant pain, swelling, and mechanical symptoms like locking or catching.

Use this code for a patient presenting with a newly diagnosed, complex tear of the left lateral meniscus due to an acute event, such as a sports injury or fall. It is appropriate for the initial visit where the injury is first evaluated and a definitive diagnosis of a complex tear is established, often confirmed by imaging like MRI. This code is used before any definitive treatment or surgical intervention has occurred.

• Ensure documentation clearly specifies "complex" and "lateral" meniscus, as well as the left knee.
• Verify the encounter is the "initial encounter" for this specific injury; subsequent encounters for the same injury will use a different seventh character.
• Confirm the tear is current and not a chronic or pre-existing condition.