Unspecified fracture of lower end of left ulna, sequela

This code indicates a past fracture of the lower portion of the left ulna, where the specific type of fracture is not documented. It signifies that the patient is currently experiencing a residual condition or complication directly attributable to that previous injury, rather than the acute fracture itself.

Use this code when a patient presents with a long-term complication, such as chronic pain, deformity, nonunion, or malunion, stemming from an old, unspecified fracture of the distal left ulna. This code is appropriate when the acute phase of the fracture has passed and the current encounter addresses the lasting effects.

• Always sequence this "S" (sequela) code after the code for the specific residual condition (e.g., M84.4x for malunion).
• Ensure documentation clearly links the current condition to the previous unspecified distal ulna fracture.
• Avoid using this code for acute or active fractures; those require codes from the initial encounter or subsequent encounter categories.