Unspecified subluxation of left thumb, initial encounter

This code signifies a partial dislocation of the left thumb's joint, where the bone ends are still in contact but misaligned. The specific joint affected (e.g., carpometacarpal, metacarpophalangeal, interphalangeal) is not documented. This is the first time the patient is being treated for this injury.

Apply this code when a patient presents with a left thumb subluxation and the medical record does not specify which joint is involved. It is appropriate for the initial evaluation and treatment of the injury. If the specific joint is identified, a more precise code should be selected.

• Ensure the documentation clearly states "left thumb" and "subluxation" without further joint specificity.
• Confirm this is the initial encounter for this specific injury; subsequent encounters will require a different seventh character.
• Avoid using this code if the documentation specifies a complete dislocation (luxation) or if the affected joint of the thumb is clearly identified.