Unspecified dislocation of unspecified patella, sequela

This code signifies a long-term complication or residual effect stemming from a patellar dislocation where the specific side (left or right) and the exact nature of the dislocation are not documented. It indicates that the patient is experiencing ongoing issues directly attributable to a past, unspecified kneecap displacement.

Assign this code when a patient presents with a current condition or symptom that is a direct consequence of a previous, unspecified patellar dislocation, and the acute phase of the injury has passed. This is appropriate when the medical record lacks details regarding the specific patella involved or the type of dislocation, but clearly links the current problem to the prior injury.

• Only use this code for conditions that are a direct result of a previous patellar dislocation, not for an acute injury.
• Ensure documentation explicitly states the current condition is a "sequela" or "due to old injury" of an unspecified patellar dislocation.
• Avoid using this code if a more specific code for the sequela (e.g., chronic instability, arthritis) and/or the laterality of the patella is available and documented.