Strain extn musc/fasc/tend l mid finger at wrs/hnd lv, init

This code signifies a non-rupture injury to the extensor muscles, fascia, or tendons of the left middle finger, specifically located at the wrist or hand level. It indicates an overstretching or tearing of these tissues, resulting in pain, swelling, and impaired function of the affected finger.

Apply this code when documenting an acute injury to the extensor mechanism of the left middle finger, such as from a sudden forceful extension or repetitive strain. This is appropriate for the initial evaluation and treatment of a newly diagnosed strain, before any subsequent care.

• Ensure the documentation specifies "left" middle finger and the injury is a "strain" (not a sprain or rupture).
• Verify the injury location is at the "wrist and hand level" to differentiate from more distal finger injuries.
• The "A" suffix indicates an initial encounter for active treatment of the injury.