Unilateral primary osteoarthritis, left hip

This code signifies degenerative joint disease affecting the left hip, where the cartilage progressively breaks down without an identifiable underlying cause. It results in pain, stiffness, and reduced range of motion in the affected hip joint.

Apply this code when documentation clearly indicates primary osteoarthritis isolated to the left hip. Supporting documentation should include diagnostic imaging (e.g., X-ray showing joint space narrowing, osteophytes) and clinical findings consistent with osteoarthritis, with no mention of trauma, infection, or other systemic conditions as the etiology.

• Ensure the documentation specifies "primary" or "idiopathic" osteoarthritis to differentiate from secondary forms.
• Verify laterality; this code is specific to the left hip.
• Do not use if the osteoarthritis is bilateral or affects other joints, or if a specific cause (e.g., post-traumatic) is identified.