Osteitis condensans, unspecified upper arm

This code describes a non-inflammatory sclerosis or condensation of bone tissue in an unspecified part of the upper arm. It typically involves increased bone density, often seen on imaging, without evidence of active infection or inflammation.

Assign this code when documentation indicates osteitis condensans affecting the upper arm, and the specific bone (e.g., humerus) or laterality (left/right) is not specified. This diagnosis is usually made based on radiographic findings.

• Ensure the documentation clearly states "unspecified upper arm" if laterality or specific bone is not identified.
• Do not confuse with osteomyelitis (M86.-) which involves infection.
• If laterality (left/right) or a more specific bone in the upper arm is documented, a more precise code from the M85.32- subcategory should be used.