Lateral dislocation of left patella, subsequent encounter

This code describes a condition where the kneecap on the left leg has slipped out of its normal position to the outer side of the knee joint. This specific code is used when the patient is receiving follow-up care for this injury, such as during rehabilitation or after initial treatment.

Use this code for patients presenting for ongoing treatment, follow-up appointments, or rehabilitation services related to a previously diagnosed lateral dislocation of the left patella. This includes visits for physical therapy, cast changes, or monitoring of healing after the initial acute care.

• Ensure documentation clearly indicates "subsequent encounter" for the dislocation, not the initial treatment.
• Verify the laterality is specifically "left" and the dislocation is "lateral."
• Do not use for initial treatment of the dislocation; a code with an "A" seventh character would be appropriate for the initial encounter.