Strain of flexor musc/fasc/tend l thm at forarm lv, subs

This code signifies a non-traumatic overstretching or tearing of the flexor muscles, fascia, or tendons specifically located in the left thumb region, extending to the forearm level. It indicates an injury that occurred previously and the patient is now receiving follow-up care, such as continued treatment, healing, or recovery monitoring.

This code is appropriate for subsequent encounters when a patient presents for ongoing management of a previously diagnosed strain to the flexor structures of the left thumb at the forearm level. This includes scenarios like physical therapy sessions, follow-up appointments to assess healing progress, or medication refills related to the initial injury.

• Ensure the documentation clearly specifies "left thumb" and "forearm level" for the flexor strain.
• Confirm the encounter is for follow-up care, not the initial injury, as indicated by the "D" seventh character.
• Verify the injury is a strain and not a sprain or complete rupture, which would require different codes.