Strain long flexor musc/fasc/tend l thm at wrs/hnd lv, sqla

This code signifies a past injury to the long flexor muscle, fascia, and tendon of the left thumb, specifically at the wrist and hand level, that has resulted in a lasting condition or complication. This could include chronic pain, weakness, limited range of motion, or other persistent issues stemming from the original strain.

Apply this code when documenting a patient presenting with a current problem that is a direct consequence of a previously sustained strain to the specified left thumb flexor structures. This is appropriate for follow-up visits addressing long-term effects, rather than the initial acute injury.

• Always assign this code as a secondary diagnosis, with the primary diagnosis reflecting the specific sequela (e.g., chronic pain, muscle weakness).
• Ensure documentation clearly links the current condition to a past strain of the long flexor muscle/tendon of the left thumb.
• Verify the "S" seventh character is appropriate, indicating a sequela, and not an initial encounter or subsequent encounter for the acute injury.