Unsp nondisp fx of fourth cervical vertebra, init for opn fx

This code signifies a fracture of the fourth cervical vertebra that is not displaced and whose specific type (e.g., comminuted, transverse) is not documented. It indicates that the skin and soft tissue overlying the fracture site were compromised, creating an open wound, and this is the initial treatment encounter for the injury.

This code is appropriate for the initial treatment of an open fracture of the C4 vertebra where imaging confirms a fracture but does not specify its morphology, and there is clear documentation of an open wound associated with the fracture. It should be used when the patient is first presenting for care of this specific injury.

• Ensure documentation explicitly states "open fracture" and "initial encounter."
• If the fracture type (e.g., burst, compression) is specified, a more specific code from the S12.3- series should be used.
• Always code associated open wound infections or complications separately.