Osteitis condensans, multiple sites

This code describes a benign, non-inflammatory bone condition characterized by increased bone density in multiple locations, often without clear symptoms. It typically involves a localized area of bone sclerosis, frequently seen in the ilium adjacent to the sacroiliac joint, but can occur in other sites.

Assign this code when documentation specifies osteitis condensans affecting more than one anatomical site. This diagnosis is typically made based on imaging studies (e.g., X-rays, CT scans) showing areas of increased bone density. Ensure the physician's documentation explicitly states "multiple sites" or lists several affected areas.

• Do not use this code for osteitis condensans affecting a single, specified site; use the appropriate site-specific code (e.g., M85.35- for pelvic region).
• Confirm that the documentation clearly indicates multiple affected areas, not just a single, widespread lesion.
• Distinguish from other sclerotic bone conditions like Paget's disease or osteopetrosis, which have different underlying etiologies and coding.