OASIS · CMS Q&As
M0100: CMS OASIS Q&As
11 questions CMS has answered, quoted whole from the CMS OASIS Q&As.
M0100 on the OASIS item lookup
M0100. When we complete the RFA 6, Transfer to an inpatient facility - patient not discharged from agency; and the patient does not return to us, do we have to cancel the RFA 6 and resubmit the RFA 7, Transfer to an inpatient facility - patient discharged from agency?
If you complete and transmit the RFA 6, Transfer to an inpatient facility - patient not discharged from agency, and the patient does not return to the care of the agency during the current 60 day certification period, no further OASIS is required. The quality episode ended with the Transfer (RFA 6) that was completed. You do not need to cancel the RFA 6 and resubmit the RFA 7, just complete your agency's internal discharge paperwork.
[Q&A EDITED 05/22; ADDED to Cat. 4b 06/14; ADDED 01/12 to Cat. 2 as Q41.1; Previously CMS OCCB Q&A 10/11 Q3]
M0100. A patient receiving skilled nursing care from a HHA is periodically placed in a local hospital for family respite. Does a patient receiving respite care in a hospital meet the requirements for an agency to complete a Transfer and Resumption of Care OASIS?
Yes, if the patient was admitted to an inpatient facility bed for 24 hours or longer for reasons other than diagnostic testing, a Transfer OASIS is required. Respite care is more than diagnostic testing and the response to M0100 - Reason for Assessment (RFA) is RFA 6 or 7, Transfer to an inpatient facility. If the agency anticipates the patient will return to their care after the inpatient stay, RFA 6 - Transferred to an inpatient facility - patient not discharged from agency should be completed. RFA 7 - Transferred to an inpatient facility - patient discharged from agency will be selected if the agency does NOT anticipate the patient will return to their care.
[Q&A EDITED 10/23; EDITED 05/22; EDITED 12/12; ADDED 06/05; M number updated 09/09]
M0100. If a patient was admitted to the hospital at 3 pm yesterday and then transfers directly to a hospice inpatient unit at 11 am today, are the inpatient hours additive? Should we do a Transfer at 3 pm today, after a full 24 hours of inpatient care, or does the clock start again at 11 am when the patient was admitted to the hospice inpatient? The same could happen with other inpatient settings- such as hospital and NF.
A Transfer OASIS is required when the patient has been transferred to an inpatient bed for 24 hours or longer for reasons other than diagnostic testing. If the patient was admitted to one inpatient facility bed then transferred to another, the Transfer OASIS would be required once a total of 24 hours have been spent as an inpatient, under an inpatient billing status. In the situation described, a Transfer is required once the patient was inpatient for a total of 24 hours, in one or more inpatient facilities.
[Q&A ADDED 06/14; Previously CMS Qtrly Q&A 07/13 Q3]
M0100. I understand that when calculating the days you have to complete the comprehensive assessment, the SOC is Day “0”. At the other OASIS data collection time points, when you are calculating the number of days you have to complete an assessment, is the time point date, Day “0”, e.g. for RFA 9, Discharge from Agency, the assessment must be completed within 2 calendar days of M0906, Discharge/transfer/death date. Is M0906 Day “0”?
Yes, when calculating the days, you have to complete the comprehensive assessment, the SOC date is day “0”. For the other time points the date of reference (e.g., transfer date, discharge date, death date) is day “0”. Note that for the purposes of calculating a 60-day certification period, the SOC day is day “1”.
[Q&A EDITED 05/22; ADDED 08/07; Previously CMS OCCB Q&A 07/06 Q3]
M0100. A patient is admitted to the hospital for knee replacement surgery. During the pre-surgical workup, a test result caused the surgery to be canceled. The patient only received diagnostic testing while in the hospital but the stay was longer than 24 hours. Does this situation meet the criteria for RFA 6 or 7, Transferred to inpatient facility?
No, under the circumstances described, the patient did not meet the OASIS transfer criteria of admission to an inpatient facility for reasons other than diagnostic testing, if the patient, indeed, did not have any other treatment other than diagnostic testing during their hospitalization. If the patient received treatment for the abnormal test result, then the situation, as described, would meet the criteria for RFA 6 or 7, Transfer to inpatient facility.
[Q&A ADDED 08/07; Previously CMS OCCB Q&A 07/06 Q4]
M0100. Our Home Health agency admitted a patient on July 1st. He was admitted to the hospital on July 28th; from there he went to a skilled nursing facility on August 6th where he stayed until he died on September 17th. When our Home Health agency audited the discharged record this week, it was discovered that a Transfer OASIS had never been done. My question is, should a Transfer OASIS be done and submitted this late after discharge from Home Health?
In the scenario described, the Transfer OASIS (M0100 - RFA 7 – Transferred to an inpatient facility – patient discharged from agency) would be completed to end the patient’s quality episode. The M0906 date would be the date the patient transferred to the hospital (July 28th), and the M0090 - Date Assessment Completed would be the day that information used determine OASIS coding was gathered by the assessing clinician and documentation of the specific information/responses was completed. The Transfer OASIS is due within two calendar days of the qualifying transfer to an inpatient facility. OASIS not completed according to the required timeframes represents noncompliance with the data collection rules.
[Q&A EDITED 10/23; EDITED 05/22; ADDED 10/16; Previously CMS Qtrly Q&A 01/16 Q1]
M0100. For the purposes of determining if a hospital admission was for reasons “other than diagnostic tests” how is “diagnostic testing” defined? I understand plain xrays, UGI, CT scans, etc. would be diagnostic tests. What about cardiac catheterization, an EGD, or colonoscopy? (A patient does receive some type of anesthesia for these). Does the fact that the patient gets any anesthesia make it surgical verses diagnostic?
Diagnostic testing refers to tests, scans and procedures utilized to yield a diagnosis. Cardiac catheterization is often used as a diagnostic test to determine the presence or status of coronary artery disease (CAD). However, a cardiac catheterization may also be used for treatment, once other testing has established a definitive CAD diagnosis. Each case must be considered individually. by the clinician without making assumptions. The fact that the procedure requires anesthesia does not determine whether or not the procedure is purely diagnostic or not. Utilizing the definition of diagnostic testing, a clinician will be able to determine whether or not a certain procedure or test is a diagnostic test.
[Q&A ADDED 08/07; Previously CMS OCCB Q&A 05/07 Q9]
M0100 & M2410. HHAs are providing services for psychiatric/mental health patients. The physician admits the patient to the hospital for "observation & medication review" to determine the need to adjust medications. These admissions can occur as often as every 2-4 weeks. The patient(s) are admitted to the hospital floor under inpatient services (not in ER or under “observation status”). The patient(s) are observed and may receive some lab work. They are typically discharged back to home care services within 3-7 days. Most patients DO NOT receive any treatment protocol (i.e., no medications were added/stopped or adjusted, no counseling services provided) while they were in the hospital. Is this considered a qualifying inpatient admission? How do you answer M0100 – Reason for Assessment & M2410 – To which Inpatient Facility?
In order to qualify for the Transfer to Inpatient Facility OASIS assessment time point, the patient must meet 3 criteria: 1) Be admitted to the inpatient facility (not the ER, not an observation bed in the ER) 2) Reside as an inpatient for 24 hours or longer (does not include time spent in the ER) 3) Be admitted for reasons other than diagnostic testing only In your scenario, you are describing a patient that is admitted to the inpatient facility and stays for 24 hours or longer for reasons other than diagnostic testing. An admission to an inpatient facility for observation is not an admission for diagnostic testing only. This is considered a qualifying inpatient hospitalization. The correct M0100 - Reason for Assessment (RFA) response would be either RFA 6 -Transfer to an inpatient facility - patient not discharged from agency or RFA 7 - Transfer to an inpatient facility - patient discharged from agency, depending on whether the agency anticipated the patient would return to their care (RFA 6) or not (RFA 7). M2410 - To which Inpatient Facility would be answered with Response 1 - Hospital as you state the patient was admitted to a hospital.
[Q&A EDITED 05/22; EDITED 12/12; ADDED 08/07; Previously CMS OCCB Q&A 05/07 Q10]
M0100 & M2301. Observation Status/Beds - A patient is held for several days in an observation bed (referred to as a “Patient Observation” or “PO” bed) in the emergency or other outpatient department of a hospital to determine if the patient will be admitted to the hospital or sent back home. While under observation, the hospital did not admit the patient as an inpatient, but billed as an outpatient under Medicare Part B. Should we complete a transfer, discharge the patient, or keep seeing the patient.
For purposes of M2301 - Emergent Care, Response 1, Yes, used hospital emergency department WITHOUT hospital admission, is the appropriate response for a patient who was held in a hospital emergency department for outpatient observation services without a subsequent qualifying hospital admission. A qualifying hospital admission is an admission to a hospital inpatient bed for 24 hours or longer for reasons other than diagnostic testing. A Transfer OASIS is not required. If, from observation status, the patient was eventually admitted to the hospital as an inpatient and the transfer criteria were met, the Transfer OASIS would be required. The agency would complete RFA 6 or RFA 7 data collection, depending on whether they anticipated the patient would return to their service (RFA 6) or not (RFA 7). During the period the patient is receiving outpatient observation care, the patient is not admitted to a hospital. Regardless of how long the patient is cared for in outpatient observation, the home care provider may not provide Medicare billable visits to the patient at the ER/outpatient department site, as the home health benefit requires covered services be provided in the patient's place of residence. If the patient is not admitted to the hospital, but returns home from the emergency department, based on physician orders and patient need, the home health agency may continue with the previous or a modified Plan of Care. An Other Follow-up OASIS assessment (RFA 5) may be required based on the agency's Other Follow-up policy criteria.
[Q&A EDITED 05/22; EDITED 10/16; EDITED 06/14; ADDED 08/07; Previously CMS OCCB Q&A 05/07 Q11]
M0100. An HHA has a patient who has returned home from a hospital stay and they have scheduled the nurse to go in to do the resumption of care visit within 48 hours. However, this patient receives both nursing and physical therapy and the PT cannot go in on the 2nd day (tomorrow) and would like to go in today. I have found the standard for an initial assessment visit must be done by a registered nurse unless they receive therapy only. Is this the same case for resumption? Is it inappropriate for the PT to go in the day before and resume PT services and the nurse then to go in the next day and do the ROC assessment update?
The requirement for the RN to complete an initial assessment visit prior to therapy visits in multidisciplinary cases is limited to the SOC time point. At subsequent time points, including the ROC, either discipline (the RN or PT in the given scenario) could complete the ROC assessment. In the situation described, while the ROC visit and assessment must be completed within 48 hours of the patient’s return home from the inpatient facility, there is no requirement that other services be delayed until the assessment is completed. Therefore, assuming compliance with your agency-specific policies and other regulatory requirements, there is no specific restriction preventing the PT from resuming services prior to the RN’s completion of the ROC assessment.
[Q&A EDITED 10/23; EDITED 10/18; ADDED 08/07; Previously CMS OCCB Q&A 05/07 Q12]
M0100. If a patient goes into a hospital as a “planned admission”, do we have to do a Transfer? We have a patient who is admitted routinely for chemotherapy treatments as planned admissions. Is this different than an admission for "planned" diagnostic testing? If it is a planned admission for testing only and "something goes wrong", does it become a Transfer?
An RFA 6 or 7, Transfer to an inpatient facility, is required any time the patient is admitted to an inpatient facility for 24 hours or longer for reasons other than diagnostic testing. The fact that it was a planned admission is not a factor in determining if the Transfer OASIS data collection and submission are required. The patient who goes routinely into an inpatient facility for chemotherapy would require an RFA 6 or 7, Transfer to an inpatient facility, if they are admitted to an inpatient for 24 hours or longer since they are receiving treatment and not just diagnostic testing. If a patient is admitted for diagnostic testing only and does not receive treatment, they do not require an RFA 6 or 7, Transfer to an inpatient facility, no matter how long they stay in the inpatient facility. If it was a planned admission for diagnostic testing and the patient ends up receiving treatment, a Transfer would be required if the stay in the inpatient bed is for 24 hours or longer.
[Q&A EDITED 10/23; EDITED 05/22; ADDED 09/09; Previously CMS OCCB Q&A 04/09 Q6]
Also mentioned in
Source: CMS OASIS Q&As: Category 4 - OASIS Data Set: Forms and Items (March 2026), text extracted from the PDF with pdftotext, retrieved 2026-10-09. Works of the US Government are in the public domain.
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