Stress fracture, left foot, subs for fx w delay heal

This code signifies a stress fracture located in the left foot that is currently undergoing treatment, but healing is not progressing as expected. It indicates that the patient is in the healing phase following initial treatment, but the bone repair is delayed.

Apply this code for patients presenting with a left foot stress fracture who are receiving ongoing care for the fracture, and clinical documentation explicitly states "delayed healing" or similar terminology. This is appropriate for follow-up visits after the initial treatment has begun, but before full healing is achieved.

• Ensure documentation specifies "left foot" and "stress fracture" as the diagnosis.
• The "G" seventh character indicates a subsequent encounter with delayed healing; do not use for initial treatment or routine healing.
• Distinguish from nonunion (M84.375K) or malunion (M84.375P), which represent more severe healing complications.