From Medicare Benefit Policy Manual, Chapter 7 , Section 30.1.1

In order for a patient to be eligible to receive covered home health services under both Part A and Part B, the law requires that a physician certify in all cases that the patient is confined to his/her home. An individual does not have to be bedridden to be considered confined to the home. However, the condition of these patients should be such that there exists a normal inability to leave home and, consequently, leaving home would require a considerable and taxing effort.

If the patient does in fact leave the home, the patient may nevertheless be considered homebound if the absences from the home are infrequent or for periods of relatively short duration, or are attributable to the need to receive health care treatment . Absences attributable to the need to receive health care treatment include, but are not limited to:

• Attendance at adult day centers to receive medical care;
• Ongoing receipt of outpatient kidney dialysis;
• The receipt of outpatient chemotherapy or radiation therapy.

Any absence of an individual from the home attributable to the need to receive health care treatment, including regular absences for the purpose of participating in therapeutic, psychosocial, or medical treatment in an adult day-care program that is licensed or certified by a State, or accredited to furnish adult day-care services in a State, shall not disqualify an individual from being considered to be confined to his home. Any other absence of an individual from the home shall not so disqualify an individual if the absence is of an infrequent or of relatively short duration. For purposes of the preceding sentence, any absence for the purpose of attending a religious service shall be deemed to be an absence of infrequent or short duration. It is expected that in most instances, absences from the home that occur will be for the purpose of receiving health care treatment . However, occasional absences from the home for nonmedical purposes, e.g., an occasional trip to the barber, a walk around the block or a drive, attendance at a family reunion, funeral, graduation, or other infrequent or unique event would not necessitate a finding that the patient is not homebound if the absences are undertaken on an infrequent basis or are of relatively short duration and do not indicate that the patient has the capacity to obtain the health care provided outside rather than in the home.

Generally speaking, a patient will be considered to be homebound if they have a condition due to an illness or injury that restricts their ability to leave their place of residence except with the aid of: supportive devices such as crutches, canes, wheelchairs, and walkers; the use of special transportation; or the assistance of another person; or if leaving home is medically contraindicated.

Some examples of homebound patients that illustrate the factors used to determine whether a homebound condition exists would be:

• A patient paralyzed from a stroke who is confined to a wheelchair or requires the aid of crutches in order to walk;
• A patient who is blind or senile and requires the assistance of another person in leaving their place of residence;
• A patient who has lost the use of their upper extremities and, therefore, is unable to open doors, use handrails on stairways, etc., and requires the assistance of another individual to leave their place of residence;
• A patient in the late stages of ALS or a neurodegenerative disabilities. In determining whether the patient has the general inability to leave the home and leaves the home only infrequently or for periods of short duration, it is necessary (as is the case in determining whether skilled nursing services are intermittent) to look at the patient's condition over a period of time rather than for short periods within the home health stay. For example, a patient may leave the home (under the conditions described above, e.g., with severe and taxing effort, with the assistance of others) more frequently during a short period when, for example, the presence of visiting relatives provides a unique opportunity for such absences, than is normally the case. So long as the patient's overall condition and experience is such that he or she meets these qualifications, he or she should be considered confined to the home.
• A patient who has just returned from a hospital stay involving surgery who may be suffering from resultant weakness and pain and, therefore, their actions may be restricted by their physician to certain specified and limited activities such as getting out of bed only for a specified period of time, walking stairs only once a day, etc.
• A patient with arteriosclerotic heart disease of such severity that they must avoid all stress and physical activity;
• A patient with a psychiatric illness that is manifested in part by a refusal to leave home or is of such a nature that it would not be considered safe for the patient to leave home unattended, even if they have no physical limitations.

The aged person who does not often travel from home because of feebleness and insecurity brought on by advanced age would not be considered confined to the home for purposes of receiving home health services unless they meet one of the above conditions.