Strain extn musc/fasc/tend fngr,unsp fngr at forarm lv, init

This code signifies a non-traumatic injury to the extensor muscles, fascia, or tendons of an unspecified finger, located at the forearm 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 a patient presents with a new, acute strain of the extensor structures of a finger, and the specific finger involved is not documented. This would be appropriate for initial evaluations and treatments of such an injury.

• Ensure documentation specifies "strain" and not a sprain, rupture, or laceration.
• Verify the injury is at the forearm level, affecting the tendons that extend to the fingers.
• Confirm this is the patient's initial encounter for this specific injury.