Traum rupt of collat ligmt of l mid fngr at MCP/IP jt, subs

This diagnosis code signifies a tear in the collateral ligament of the left middle finger, affecting both the knuckle (metacarpophalangeal) and finger (interphalangeal) joints, that is being treated during a follow-up visit. This injury typically results from a forceful sideways stress to the finger. Patients may experience pain, swelling, and instability in the affected finger.

Use this code for subsequent encounters when a patient is receiving ongoing care for a previously diagnosed traumatic rupture of the collateral ligament in their left middle finger, involving both the MCP and IP joints. This includes follow-up visits for physical therapy, re-evaluation, or monitoring of healing after initial treatment. It is appropriate when the patient is no longer in the initial acute phase of injury.

• Ensure documentation clearly specifies the left middle finger and involvement of both the MCP and IP joints.
• Verify the encounter is for follow-up care, not the initial treatment of the injury, due to the "D" seventh character.
• Distinguish this from sprains or other ligamentous injuries that do not involve a complete rupture.