Lacerat extn musc/fasc/tend unsp finger at wrs/hnd lv, sqla

This code describes a past injury to the extensor muscles, fascia, or tendons of an unspecified finger, located at the wrist or hand level, where the patient is now experiencing residual effects or complications. These sequelae can include chronic pain, stiffness, weakness, limited range of motion, or functional impairment resulting from the original laceration.

Apply this code when documenting a patient presenting with long-term problems directly attributable to a previously sustained laceration of an extensor structure in an unspecified finger at the wrist or hand. This is appropriate for follow-up encounters after the initial injury has healed, but its lasting impact is still being managed.

• Always use this code as a secondary diagnosis, following a code for the specific sequela (e.g., chronic pain, scar contracture).
• Ensure documentation clearly links the current condition to the previous extensor laceration.
• Do not use this code for acute injuries; refer to the acute injury codes in the S66.3 series for initial encounters.