Stress fracture, right ulna, sequela

This code signifies a stress fracture of the right ulna where the acute phase of the injury has passed, and the patient is now experiencing residual effects or complications from the original fracture. These sequelae could include nonunion, malunion, chronic pain, or functional impairment directly attributable to the healed or healing stress fracture.

Use this code when documenting a patient presenting with long-term problems or conditions resulting from a previously sustained stress fracture of the right ulna. Documentation should clearly state that the current symptoms are a "sequela" or "late effect" of the prior stress fracture, and specify the right ulna as the affected bone.

• Always sequence this sequela code after the code for the specific sequela itself (e.g., M96.0 for pseudarthrosis following fusion).
• Ensure documentation explicitly links the current condition to the previous stress fracture of the right ulna.
• Do not use for acute stress fractures; those require codes from the M84.3- category without the "S" seventh character.