Strain extn musc/fasc/tend l rng fngr at wrs/hnd lv, subs

This code signifies a non-traumatic overstretching or tearing of the extensor muscles, fascia, or tendons specifically affecting the ring finger of the left hand, at the wrist or hand level. This injury results in pain, swelling, and impaired movement of the affected finger.

Use this code for follow-up encounters for a patient receiving active treatment for a strain of the left ring finger extensor structures. This includes subsequent office visits, physical therapy sessions, or medication management related to the initial injury.

• Ensure the documentation specifies the left ring finger and the extensor mechanism.
• Confirm the encounter is for subsequent care, not the initial injury (which would use an 'A' seventh character).
• Verify the injury is a strain, not a sprain, laceration, or fracture.