Osteitis condensans, unspecified lower leg

This code describes a non-inflammatory sclerosis of bone, specifically affecting an unspecified lower leg. It is characterized by increased bone density, often in response to stress or degenerative changes, without evidence of infection or tumor. The condition typically presents as localized bone thickening.

Use this code when documentation specifies osteitis condensans of the lower leg without further anatomical specificity (e.g., tibia, fibula). This diagnosis is often made radiographically, showing increased bone density or sclerosis. Supporting documentation should clearly indicate the diagnosis and the affected general anatomical region.

• Ensure the documentation specifies "osteitis condensans" and not another form of osteosclerosis or osteomyelitis.
• Avoid using this code if a more specific anatomical site within the lower leg (e.g., tibia, fibula) is documented; instead, use a more precise code from the M85.3- subcategory.
• This code is for an unspecified lower leg; if laterality is known but not the specific bone, consider codes like M85.361 (right lower leg) or M85.362 (left lower leg).