Strain long flexor musc/fasc/tend r thm at wrs/hnd lv, subs

This code signifies a non-traumatic injury to the long flexor muscle, its surrounding fascia, and its tendon in the right thumb, specifically at the wrist and hand level. It indicates an overstretching or tearing of these tissues, resulting in pain, swelling, and impaired thumb movement.

Apply this code when documenting follow-up care for a patient previously diagnosed with a strain of the right thumb's long flexor structures. This includes encounters for ongoing treatment, rehabilitation, or monitoring of healing after the initial injury.

• Ensure documentation specifies the right thumb and the "subsequent encounter" status.
• Distinguish from sprains (ligamentous injury) or complete ruptures.
• Verify the injury location is at the wrist and hand level, not more proximal.