Inj extn musc/fasc/tend unsp finger at wrs/hnd lv, sequela

This code signifies a healed or residual condition resulting from a past injury to an extensor muscle, fascia, or tendon of an unspecified finger, located at the wrist or hand level. It indicates that the acute phase of the injury has passed, and the patient is now experiencing long-term effects such as pain, stiffness, weakness, or limited range of motion.

Use this code when documenting chronic pain, functional impairment, or other lasting consequences directly attributable to a previous extensor injury of an unspecified finger at the wrist or hand. This applies to follow-up encounters for conditions that are no longer acute but require ongoing management or evaluation of the sequelae.

• Always use this code as a secondary diagnosis, following the primary code for the specific sequela (e.g., chronic pain, scar contracture).
• Ensure documentation clearly links the current condition to a past extensor injury of the finger at the wrist/hand level.
• Avoid using this code for acute injuries; instead, select an appropriate acute injury code from the S66.3 category.