Sprain of unsp collateral ligament of unsp knee, init encntr

This code signifies a sprain of a collateral ligament in the knee, where the specific ligament (medial or lateral) and the affected knee (right or left) are not documented. It indicates the initial phase of treatment for this injury.

Apply this code when a patient presents with a knee sprain and the clinical documentation confirms involvement of a collateral ligament, but does not specify which one or which knee. This is appropriate for the initial visit or active treatment phase of the injury.

• Only use this code when the documentation explicitly lacks specificity regarding the collateral ligament and/or laterality.
• Always query the provider for more detailed information if possible to achieve a more specific diagnosis code.
• The "A" seventh character indicates an initial encounter for active treatment.