Sprain of unsp collateral ligament of left knee, init encntr

This code signifies a sprain affecting an unspecified collateral ligament in the left knee. It indicates an injury to either the medial collateral ligament (MCL) or the lateral collateral ligament (LCL) where the specific ligament involved is not documented. This is the initial encounter for this specific injury.

This code is appropriate when a patient presents with a left knee sprain, and the physician's documentation confirms a collateral ligament injury but does not specify whether it's the MCL or LCL. It should be used for the first time a patient is seen for this particular injury.

• Only use this code when the specific collateral ligament (MCL or LCL) is not documented. If specified, use the more precise code.
• The "A" suffix indicates an initial encounter; ensure this is the first time the patient is being treated for this injury.
• Always review the entire medical record for laterality and specificity of the injured ligament.