When coding for a patient incarcerated at a prison, which address should be documented?

When coding for a patient who is incarcerated at a prison, the address that should be documented is the one corresponding to their current location, which in this case is 456 Prison Rd. It is essential to record the patient's actual residence while receiving care, especially in contexts where the location may influence aspects of treatment, insurance coverage, or legal considerations.

Using the prison address ensures accuracy in the patient’s records and helps maintain consistency in their medical files. It also ensures proper communication of the patient’s location should there be any need for follow-up care, referral, or emergency services. Other address options, such as the last known address or a generic residential address, do not reflect the reality of the patient's current situation and could lead to confusion or errors in care continuity.