Nondisp fx of shaft of first MC bone, right hand, sequela

This code signifies a healed or residual effect of a fracture involving the shaft of the first metacarpal bone in the right hand, which was initially nondisplaced. The "sequela" designation indicates that the patient is presenting for care related to a complication, late effect, or follow-up of this previously sustained injury, rather than the acute fracture itself.

This code is appropriate for encounters addressing long-term complications such as malunion, nonunion, pain, stiffness, or functional limitations directly attributable to a past nondisplaced right first metacarpal shaft fracture. It should be used when the acute phase of the fracture has passed and the current visit is for a condition resulting from the prior injury.

• Ensure documentation clearly supports a "sequela" rather than an acute or subsequent encounter for the initial healing phase.
• Always code the specific sequela (e.g., M84.454A for malunion) first, followed by this sequela code.
• Verify the fracture was indeed nondisplaced and involved the shaft of the first metacarpal on the right hand.