Strain extn/abdr musc/fasc/tend of r thm at forarm lv, subs

This code signifies a non-traumatic overstretching or tearing of the extensor or abductor muscles, fascia, or tendons specifically located in the right thumb region, but at the level of the forearm. It indicates that the patient is presenting for follow-up care after the initial injury.

Apply this code for patients receiving ongoing treatment, such as physical therapy or re-evaluation, for a previously diagnosed strain of the right thumb's extensor or abductor structures originating in the forearm. This is appropriate after the acute phase of the injury has passed.

• Ensure documentation specifies the right thumb and the forearm level involvement.
• Verify the encounter is for subsequent care, not the initial injury or a sequela.
• Confirm the injury is a strain, not a sprain, rupture, or other type of injury.