What is the Patient Control Number on UB-04?

• A. A facility-assigned unique identifier for the patient's episode used to link claim lines.
• B. The patient's social security number.
• C. The facility's billing tax ID.
• D. The insurance policy number.

Answer: (A)

The main idea is that the Patient Control Number is an internal, hospital-assigned tag that identifies a single patient encounter or episode. On a UB-04 claim, this number is created by the facility and used to tie every related charge and service from that particular admission or visit together into one cohesive record. It’s what links all claim lines—rooms, procedures, tests, and supplies—so the payer and the hospital can see they all belong to the same encounter. This number is not the patient’s Social Security number, the facility’s tax ID, or the patient’s insurance policy number. Those identifiers serve different purposes and carry different kinds of information, whereas the Patient Control Number is specifically about organizing and reconciling charges for a single episode.