Disp fx of medial wall of unspecified acetabulum, sequela

This code signifies a healed or chronic displaced fracture affecting the medial wall of the acetabulum, where the patient is still experiencing residual effects or complications from the original injury. The displacement indicates the bone fragments are not in their normal anatomical alignment. This diagnosis is used when the acute phase of treatment has passed, but the fracture continues to impact the patient's health.

Apply this code for patients presenting with long-term complications such as chronic pain, limited range of motion, post-traumatic arthritis, or nonunion/malunion related to a previously sustained displaced medial acetabular wall fracture. It is appropriate when the initial injury occurred more than a year prior, or when the sequelae are clearly documented as chronic.

• Ensure documentation clearly states "sequela" or describes chronic residual effects from a past fracture.
• Verify the specific location is the "medial wall" of the acetabulum, as other acetabular fracture codes exist.
• Always code any associated current symptoms or complications (e.g., M16.x for post-traumatic osteoarthritis) in addition to this sequela code.