Osteoarthritis of knee, unspecified

This code represents the general diagnosis of osteoarthritis affecting the knee joint without further specification of laterality or type. It indicates degenerative joint disease characterized by cartilage breakdown, bone spurs, and joint pain in the knee. This is a broad diagnosis used when more specific details are not available or documented.

This code is appropriate when documentation confirms osteoarthritis of the knee but does not specify whether it is primary, secondary, post-traumatic, or the specific knee (right or left) affected. It can be used for initial evaluations or follow-up appointments where the laterality or specific type of osteoarthritis has not yet been determined or clearly documented. Use when the provider's assessment simply states "knee osteoarthritis" without further detail.

• Avoid using this code if laterality (right or left knee) is documented; instead, use the more specific M17.1-M17.5 series.
• Do not use if the type of osteoarthritis (e.g., primary, secondary, post-traumatic) is specified; refer to the appropriate subcategory within M17.
• This code should be a last resort when no further specificity can be gleaned from the medical record. Query the provider for more detail if possible.