A coder applies the inpatient UHDDS principal-diagnosis definition to select the first-listed diagnosis on a hospital outpatient encounter. What is the correct assessment?
Select an answer to reveal the explanation.
Short Explanation
UHDDS principal diagnosis is an inpatient discharge concept. Outpatient and many ambulatory visits use first-listed rules instead—do not paste the inpatient definition onto every setting. Right rulebook for the right encounter.
Full Explanation
UHDDS principal-diagnosis definitions apply to acute hospital inpatient discharges. Outpatient and ambulatory coding use Official Guidelines for first-listed diagnosis selection appropriate to that setting. Misapplying inpatient UHDDS principal-diagnosis logic to outpatient encounters produces incorrect sequencing and data-set misuse.