4-part fracture of surgical neck of left humerus, sequela

This code signifies a chronic or late effect stemming from a four-part fracture of the surgical neck of the left humerus. This type of fracture involves the humeral head separating into four distinct fragments, and "sequela" indicates that the current patient encounter addresses a complication or residual condition directly resulting from this past injury, rather than the acute fracture itself.

Use this code when a patient presents for treatment of long-term complications such as nonunion, malunion, chronic pain, nerve damage, or limited range of motion directly attributable to a previously sustained four-part fracture of the surgical neck of the left humerus. This code is appropriate for follow-up care after the initial healing phase of the fracture has concluded.

• Always assign a secondary code to specify the nature of the sequela (e.g., M84.222A for nonunion, M96.0 for pseudarthrosis).
• Ensure documentation clearly links the current condition to the historical four-part fracture of the left humeral surgical neck.
• Do not use this code for the initial treatment of the acute fracture; use the appropriate acute fracture code with the correct encounter type.