Unspecified subluxation of unspecified knee, sequela

This code indicates a partial dislocation of the knee joint where the specific bone involved (e.g., patella, tibia, femur) is not documented, and the laterality (left or right) is also unknown. It signifies that the subluxation is a long-term consequence or complication of an earlier injury or condition, rather than an acute event.

This code is appropriate when a patient presents with ongoing symptoms related to a previously occurring, but unspecified, knee subluxation, and the medical record lacks details regarding the specific anatomical site or side. It should be used when the subluxation is no longer acute and is being treated as a chronic or residual problem.

• Only use this code when documentation explicitly states "unspecified" for both the subluxation type and laterality, and indicates a sequela.
• Always strive for more specific codes if the documentation allows for identification of the specific knee (left/right) and type of subluxation (e.g., patellar, tibial).
• The "S" seventh character indicates a sequela, meaning the condition is a late effect of an earlier injury.