Sltr-haris Type IV physl fx low end ulna, unsp arm, 7thK

This code signifies a complex growth plate fracture at the lower end of the ulna, specifically a Salter-Harris Type IV injury, which involves both the epiphysis and metaphysis. The "subsequent encounter" indicates that the patient is receiving ongoing care for this fracture, and "nonunion" specifies that the bone fragments have failed to heal together after a typical healing period.

Use this code for follow-up visits or hospitalizations where a patient is being treated for a previously diagnosed Salter-Harris Type IV fracture of the distal ulna that has not successfully united. This includes evaluations for surgical intervention to address the nonunion, casting changes, or physical therapy related to the unhealed fracture.

• Ensure documentation clearly states "nonunion" and specifies the Salter-Harris Type IV classification.
• Verify the encounter is for subsequent care, not the initial injury.
• Laterality (left or right arm) is unspecified in this particular code, so use a more specific code if available.