Chondromalacia, multiple sites

This code signifies the softening and breakdown of articular cartilage affecting multiple joints throughout the body. It represents a degenerative process where the cartilage loses its normal resilient structure, leading to pain, swelling, and impaired joint function.

Apply this code when documentation clearly indicates chondromalacia affecting more than one distinct anatomical site. This diagnosis is supported by physician notes detailing findings from physical examination, imaging studies (e.g., MRI showing cartilage changes), and arthroscopic reports confirming cartilage softening across multiple joints.

• Ensure the documentation explicitly states "multiple sites" or lists several affected joints to justify this code.
• Do not use this code if chondromalacia is localized to a single joint; instead, use the site-specific M94.2- code.
• Consider sequencing this code as a secondary diagnosis if a more specific underlying cause of the chondromalacia (e.g., osteoarthritis) is documented and coded.