Question: Nevada Subscriber Answer: If the physician confirms that the patient has OSA, you should instead choose 327.23 (Obstructive sleep apnea [adult] [pediatric]) as a diagnosis. On the claim, link 327.23 to 99213 (Established patient visit for the evaluation and management of a patient, which requires these three key components: an expanded problem focused history; an expanded problemfocused examination; medical decision-making of low complexity). Also, include 278.01 (Morbid obesity) as a secondary diagnosis to represent the patient's co-morbidity.