Sprain of medial collateral ligament of right knee, init

This code signifies an injury to the medial collateral ligament (MCL) on the inner side of the right knee, characterized by stretching or tearing of the ligament fibers. It indicates the very first time this specific injury is being treated or evaluated by a healthcare provider.

Apply this code when documenting a newly diagnosed MCL sprain of the right knee, typically following a valgus stress injury during sports or a fall. It is appropriate for the initial assessment, diagnosis, and planning of treatment for this specific injury.

• Ensure documentation clearly specifies the right knee and the initial nature of the encounter.
• Distinguish from chronic or subsequent encounters for the same injury, which would use different seventh characters.
• Look for keywords like "new injury," "first presentation," or "acute" in the physician's notes.