1) Treatment in the hospital's emergency department without admission to an inpatient bed is not considered an inpatient admission and would not be reported as such when answering the OASIS items.
2)The patient's Medicare number should be entered, whether or not Medicare is the pay source for the episode. Keep in mind that Medicare is often the Second Payer, even when another payer will be billed first. In order to bill Medicare as a Secondary Payer, the patient must be identified as a Medicare patient from the start of care. If an agency does not expect to bill Medicare for services provided by the agency during the episode, then Medicare would not be included as a pay source on M0150, even though the patient's Medicare number is reported in M0063.
3) An adaptive reader, like a magnifying glass, would not be considered a corrective lens when scoring M1200 Vision. In this scenario, you would report what the patient is able to see with the corrective lens only.
4) Since the patient's supplemental oxygen use is not continuous, M1400 should reflect the level of exertion that results in dyspnea without the use of oxygen. The correct response would be "4 - At rest (during day r night)". It would be important to include further clinical documentation to explain the patient's specific condition.