Struck by hit or thrown ball, unspecified type, subs encntr

This code signifies an injury sustained from being struck by a ball of an unspecified type during a subsequent encounter. It indicates that the patient is presenting for follow-up care, healing, or complications related to an initial injury caused by a hit or thrown ball. The specific type of ball involved is not documented or is unknown.

Apply this code when a patient returns for medical attention after an initial injury from being struck by a ball, and the type of ball (e.g., baseball, basketball, soccer ball) was not specified or is not relevant to the current encounter. This is appropriate for follow-up visits for contusions, fractures, sprains, or other injuries resulting from such an incident.

• Always pair this external cause code with a primary diagnosis code describing the actual injury sustained.
• Ensure the "XD" seventh character is appropriate for a subsequent encounter, indicating ongoing care for the initial injury.
• Avoid using this code if the type of ball is known and a more specific W21.x code is available.