Osteophyte, unspecified knee

This code represents the presence of an osteophyte, commonly known as a bone spur, in an unspecified knee. An osteophyte is a bony outgrowth that typically forms along joint margins, often in response to joint degeneration or instability. While it indicates the presence of a bone spur, it does not specify the laterality (right or left) of the affected knee.

Use this code when documentation clearly indicates the presence of an osteophyte in a patient's knee, but the specific laterality (right or left) is not documented. This is often seen in imaging reports (e.g., X-ray, MRI) that identify a bone spur without specifying which knee. It is also appropriate when the physician's notes mention a knee osteophyte without laterality.

• Avoid using this code if laterality is specified; instead, use the more specific codes M25.761 (right knee) or M25.762 (left knee).
• This code should be sequenced as a secondary diagnosis when the osteophyte is a manifestation of an underlying condition, such as osteoarthritis (M17.-).
• Ensure the documentation explicitly states "osteophyte" or "bone spur" in the knee; do not infer its presence from other findings.