Nondisp fx of trapezium, unspecified wrist, sequela

This code signifies a healed or residual condition resulting from a prior, nondisplaced fracture of the trapezium bone in an unspecified wrist. The original injury has resolved, but the patient is now experiencing a complication or late effect directly attributable to that fracture.

Use this code when documenting a patient encounter for a sequela (e.g., chronic pain, stiffness, nonunion, malunion, degenerative changes) directly related to a previously sustained, nondisplaced trapezium fracture of an unspecified wrist. This code is appropriate when the initial fracture has already been treated and is no longer in an active healing phase.

• Requires a seventh character "S" to indicate sequela.
• Do not use for initial or subsequent encounters for the active treatment of the fracture.
• Always code the specific sequela (e.g., M79.641 for pain in right hand) in addition to this code.