Inj intrinsic musc/fasc/tend left thumb at wrs/hnd lv, subs

This code signifies an injury to the intrinsic muscles, fascia, or tendons within the left thumb, specifically at the wrist or hand level, that is being treated during a follow-up visit. This includes injuries like strains, sprains, or partial tears to these specific structures, excluding open wounds or fractures.

Apply this code for patients presenting for subsequent care of a previously diagnosed injury to the intrinsic muscles, fascia, or tendons of the left thumb. This would include follow-up appointments for physical therapy, wound checks (if applicable to the soft tissue injury), or medication management after the initial treatment phase.

• Ensure the documentation clearly specifies the left thumb and the wrist and hand level for the intrinsic muscle/tendon/fascia injury.
• Verify that the encounter is for subsequent care, not the initial treatment of the injury.
• Distinguish this from injuries to extrinsic thumb muscles/tendons, which would be coded differently.