Observation status in Medicare terms is billed under which Part, and patients may face copays and deductibles?

• A. Part B; copays and deductibles
• B. Part A; no copays
• C. Part C; fixed fee
• D. Part D; prescription costs

Answer: (A)

Observation status is treated as an outpatient hospital service. Medicare billing for this is under Part B (medical insurance), not Part A (inpatient hospital insurance). Because it’s Part B, the patient is responsible for Part B cost-sharing, which includes meeting the annual Part B deductible and then paying 20% coinsurance for most services, with possible copays for certain outpatient items. If the patient is later admitted as an inpatient, the stay would fall under Part A, with its own deductibles and coinsurance. The key point is that observation status carries Part B cost-sharing rather than Part A.