Strain of intrns musc/fasc/tend l thm at wrs/hnd lv, sequela

This code signifies a chronic or residual strain affecting the deep muscles, fascia, or tendons within the left thumb, specifically at the wrist and hand level. It indicates that the initial injury has resolved, but the patient continues to experience symptoms or limitations directly related to the previous strain. This is not an acute injury but rather a long-term consequence.

Apply this code when documentation clearly indicates a history of a left thumb intrinsic muscle, fascia, or tendon strain, and the current encounter addresses persistent pain, weakness, stiffness, or other sequelae from that prior injury. This code is appropriate for follow-up visits where the focus is on managing the long-term effects of the strain, rather than the initial acute event.

• Ensure the medical record explicitly states "sequela" or describes a chronic condition resulting from a past strain.
• Do not use this code for acute or initial injury encounters; those require an acute strain code.
• Always code the underlying cause or current symptoms if they are also being treated.