Richmond, VA – In an effort to simplify inpatient medical billing, one area hospitalist group has determined that “altered mental status” (ICD-9 780.97) is the most efficient code for use in any patient work up.
“When you enter a hospital, you’re bound to have some kind of mental status change,” said Dr. Fishbinder, co-partner of Area Hospitalists, PLLC. “Whether it’s confusion about where your room is located in relationship to the visitor’s parking structure, frustration with being woken up every hour or two to check your vital signs, or just plain old fatigue from being sick, you are not thinking as clearly as before you were admitted. And that’s all the justification we need to order anything from drug and toxin screens, to blood cultures, brain MRIs, tagged red blood cell nuclear scans, or cardiac Holter monitoring. There really is no limit to what we can pursue with our tests.”
Common causes of mental status changes in the elderly include medicine-induced cognitive side effects, disorientation due to disruption in daily routines, age-related memory impairment, and urinary tract infections.
“The urinalysis is not a very exciting medical test,” stated Dr. Fishbinder. “It doesn’t matter that it’s cheap, fast, and most likely to provide an explanation for strange behavior in hospitalized patients. It’s really not as elegant as the testing involved in a chronic anemia or metabolic encephalopathy work up. I keep it in my back pocket in case all other tests are negative, including brain MRIs and PET scans.”
Nursing staff at Richmond Medical Hospital report that efforts to inform hospitalists about foul smelling urine have generally fallen on deaf ears. “I have tried to tell the hospitalists about cloudy or bloody urine that I see in patients who are undergoing extensive work ups for mental status changes,” reports nurse Sandy Anderson. “But they insist that ‘all urine smells bad’ and it’s really more of a red herring.”
Another nurse reports that delay in diagnosing urinary tract infections (while patients are scheduled for brain MRIs, nuclear scans, and biopsies) can lead to worsening symptoms which accelerate and expand testing. “Some of my patients are transferred to the ICU during the altered mental status work up,” states nurse Anita Misra. “The doctors seem to be very excited about the additional technology available to them in the intensive care setting. Between the central line placement, arterial blood gasses, and vast array of IV fluid and medication options, urosepsis is really an excellent entré into a whole new level of care.”
“As far as medicine-induced mental status changes are concerned,” added Dr. Fishbinder, “We’ve never seen a single case in the past 10 years. Today’s patients are incredibly resilient and can tolerate mixes of opioids, anti-depressants, anti-histamines, and benzodiazepines without any difficulty. We know this because most patients have been prescribed these cocktails and have been taking them for years.”
Patient family members have expressed gratitude for Dr. Fishbinder’s diagnostic process, and report that they are very pleased that he is doing everything in his power to “get to the bottom” of why their loved one isn’t as sharp as they used to be.
“I thought my mom was acting strange ever since she started taking stronger pain medicine for her arthritis,” says Nelly Hurtong, the daughter of one of Dr. Fishbinder’s inpatients. “But now I see that there are deeper reasons for her ‘altered mental status’ thanks to the brain MRI that showed some mild generalized atrophy.”
Hospital administrators praise Dr. Fishbinder as one of their top physicians. “He will do whatever it takes to figure out the true cause of patients’ cognitive impairments.” Says CEO, Daniel Griffiths. “And not only is that good medicine, it is great for our Press Ganey scores and our bottom line.”
As for the nursing staff, Griffiths offered a less glowing review. “It’s unfortunate that our nurses seem preoccupied with urine testing and medication reconciliation. I think it might be time for us to mandate further training to help them appreciate more of the medical nuances inherent in quality patient care.”
Dr. Fishbinder is in the process of creating a half-day seminar on ‘altered mental status in the inpatient setting,’ offering CME credits to physicians who enroll. Richmond Medical Hospital intends to sponsor Dr. Fishbinder’s course, and franchise it to other hospitals in the state, and ultimately nationally.
Click here for a musical take on over-testing.
I am a regular reader of patient blogs, and I find myself frequently gasping at the mistreatment they experience at the hands of my peers. Yesterday I had the “pleasure” of being a patient myself, and found that my professional ties did not protect me from outrageously poor bedside manners. I suppose I’m writing this partly to vent, but also to remind healthcare professionals what not to do to patients waking up from anesthesia. I also think my experience may serve as a reminder that it’s ok to fire your doctor when conditions warrant.
I chose my gastroenterologist based on his credentials and the quality of training and experience listed on Healthgrades.com I had no personal recommendations to rely upon – so I used what I thought was a reasonable method for finding a good local doctor. When I met him for our initial office consultation he seemed rushed and distracted, without genuine curiosity about my complaints, complicated history, or how to help me find the correct diagnosis. I brushed my instincts aside, presuming he was just having a “bad day” and hoping for more time to discuss things fully once a battery of blood tests had been completed.
Sadly, I didn’t have the chance to review the results with him – instead he instructed his nurse to read me the results over the phone and to schedule me for a colonoscopy. I wanted to discuss the pros and cons of the procedure and what he thought he might be able to rule out with the test. He did not provide me with basic informed consent information, nor was he able to articulate medical necessity for the scope. I decided not to have the test, and I didn’t hear another word from him or his office.
Months later my symptoms had worsened and so I decided that a colonoscopy might help to further elucidate the potential cause. I was not able to get through to my doctor via phone, so I scheduled the test via his nursing staff. I planned to be the first patient of the day, so that we would have time to discuss my symptoms and concerns.
On the day of the procedure my physician stormed into my surgical bay and began reading my medical history to me from the computer screen, without exchanging basic niceties or introducing himself to my husband. I confirmed the information and tried to offer some nuance since our last office meeting. He cut me off, and made me feel as if my observations were completely unhelpful and were getting in the way of our scope time. He left in a rush before I felt that he had any clear sense of what we were trying to accomplish or rule out with the procedure.
A jovial anesthesiologist then entered my curtained cubicle, and made genuine human contact with me. He inquired about the reasons for the procedure and expressed appropriate glee regarding my Mallampati grade I airway. I asked him if he would be so kind as to not position me directly on my left shoulder during the procedure as it was exquisitely tender from a recent orthopedic injury. He promised to do his best to protect the injury while I was sedated.
Cut to the endoscopy suite where the gastroenterologist enters with a grumble as the techs bustle around the scope equipment and the anesthesiologist explains the slightly altered positioning for my comfort. As the propofol anesthetic goes into my vein I feel the gastroenterologist push me fully onto my injury as I lose the ability to protest.
After the procedure I’m back in my bay with my husband, groggy but with more pain in my shoulder than anywhere else. The curtain is drawn back with a yank and in marches the GI doc, relaying the unanticipated abnormal findings. I ask (in a slightly slurred tone) for more information, to which he responds in a loud voice, “You’re not going to remember any of this so just be quiet and listen!”
I persist in my attempts to understand the details to which he shouts “Shut up and listen” with increasing decibels. When I say that the findings still don’t explain my symptoms and that I remain perplexed he says that I should “try probiotics.” Finally he leaves the room, not offering any reassurance about the possibility of bowel perforation and stating that we’ll “Just have to wait for the pathology report, and it will take a while because of the July 4th weekend.”
I was dumbfounded, and not just because of my post-anesthetic stupor, but because of the open hostility showed to me by one of my peers. I asked my husband if I was out of line in my questioning and he said that I sounded “like a drunk person” but that the doctor was definitely being “an a**hole.”
As the nurses untangled me from the IV and EKG stickers and rushed me into a wheelchair and out to my husband’s waiting vehicle, all I could say was “Wow, my gastroenterologist was really mean to me.”
The nurses just nodded and suggested that I wasn’t the first to notice that.
As I recover from the whirlwind interaction with the healthcare system, I feel relief and anger. I’m relieved that my GI doc didn’t perforate my bowel and that we accidentally caught some very bad stuff early on, but I’m angry about how I was treated and feel no closer to an explanation for my symptoms than when I started investigating a year ago. My experience was probably fairly typical for many patients dealing with physicians who have lost empathy and compassion. I am sad that there are so many like that out there and I promise to do my best not to follow suit.
My bottom line on gastroenterologists (sorry for the horrible pun): Go with your gut. If your doctor displays jerk-like tendencies during your office visit, rest assured that they can bloom in time. Have the courage to find another doctor before you put your life in their hands and/or they get the chance to verbally abuse you in a post-anesthetic stupor. I am firing my doctor a little bit on the late side, but doing it nonetheless. I just hope that my orthopedist is a good egg (like my anesthesiologist) – because I’ve got one heck of a sore shoulder coming his way!
Twenty years ago I started my job as ‘Professor of Complementary Medicine’ at the University of Exeter and became a full-time researcher of all matters related to alternative medicine. One issue that was discussed endlessly during these early days was the question whether alternative medicine can be investigated scientifically. There were many vociferous proponents of the view that it was too subtle, too individualised, too special for that and that it defied science in principle. Alternative medicine, they claimed, needed an alternative to science to be validated. I spent my time arguing the opposite, of course, and today there finally seems to be a consensus that alternative medicine can and should be submitted to scientific tests much like any other branch of health care.
Looking back at those debates, I think it is rather obvious why apologists of alternative medicine were so vehement about opposing scientific investigations: they suspected, perhaps even knew, that the results of such research would be mostly negative. Once the anti-scientists saw that they were fighting a lost battle, they changed their tune and adopted science – well sort of: they became pseudo-scientists (‘if you cannot beat them, join them’). Their aim was to prevent disaster, namely the documentation of alternative medicine’s uselessness by scientists. Meanwhile many of these ‘anti-scientists turned pseudo-scientists’ have made rather surprising careers out of their cunning role-change; professorships at respectable universities have mushroomed. Yes, pseudo-scientists have splendid prospects these days in the realm of alternative medicine.
The term ‘pseudo-scientist’ as I understand it describes a person who thinks he/she knows the truth about his/her subject well before he/she has done the actual research. A pseudo-scientist is keen to understand the rules of science in order to corrupt science; he/she aims at using the tools of science not to test his/her assumptions and hypotheses, but to prove that his/her preconceived ideas were correct.
So, how does one become a top pseudo-scientist? During the last 20 years, I have observed some of the careers with interest and think I know how it is done. Here are nine lessons which, if followed rigorously, will lead to success (… oh yes, in case I again have someone thick enough to complain about me misleading my readers: THIS POST IS SLIGHTLY TONGUE IN CHEEK).
- Throw yourself into qualitative research. For instance, focus groups are a safe bet. This type of pseudo-research is not really difficult to do: you assemble about 5 -10 people, let them express their opinions, record them, extract from the diversity of views what you recognise as your own opinion and call it a ‘common theme’, write the whole thing up, and - BINGO! – you have a publication. The beauty of this approach is manifold: 1) you can repeat this exercise ad nauseam until your publication list is of respectable length; there are plenty of alternative medicine journals who will hurry to publish your pseudo-research; 2) you can manipulate your findings at will, for instance, by selecting your sample (if you recruit people outside a health food shop, for instance, and direct your group wisely, you will find everything alternative medicine journals love to print); 3) you will never produce a paper that displeases the likes of Prince Charles (this is more important than you may think: even pseudo-science needs a sponsor [or would that be a pseudo-sponsor?]).
- Conduct surveys. These are very popular and highly respected/publishable projects in alternative medicine – and they are almost as quick and easy as focus groups. Do not get deterred by the fact that thousands of very similar investigations are already available. If, for instance, there already is one describing the alternative medicine usage by leg-amputated police-men in North Devon, and you nevertheless feel the urge of going into this area, you can safely follow your instinct: do a survey of leg-amputated police men in North Devon with a medical history of diabetes. There are no limits, and as long as you conclude that your participants used a lot of alternative medicine, were very satisfied with it, did not experience any adverse effects, thought it was value for money, and would recommend it to their neighbour, you have secured another publication in an alternative medicine journal.
- Take a sociological, anthropological or psychological approach. How about studying, for example, the differences in worldviews, the different belief systems, the different ways of knowing, the different concepts about illness, the different expectations, the unique spiritual dimensions, the amazing views on holism – all in different cultures, settings or countries? Invariably, you will, of course, conclude that one truth is at least as good as the next. This will make you popular with all the post-modernists who use alternative medicine as a playground for getting a few publications out. This approach will allow you to travel extensively and generally have a good time. Your papers might not win you a Nobel prize, but one cannot have everything.
- Do a safety study. It could well be that, at one stage, your boss has a serious talk with you demanding that you start doing what (in his narrow mind) constitutes ‘real science’. He might be keen to get some brownie-points at the next RAE and could thus want you to actually test alternative treatments in terms of their safety and efficacy. Do not despair! Even then, there are plenty of possibilities to remain true to your pseudo-scientific principles. By now you are good at running surveys, and you could, for instance, take up your boss’ suggestion of studying the safety of your favourite alternative medicine with a survey of its users. You simply evaluate their experiences and opinions regarding adverse effects. But be careful, you are on somewhat thinner ice here; you don’t want to upset anyone by generating alarming findings. Make sure your sample is small enough for a false negative result, and that all participants are well-pleased with their alternative medicine. This might be merely a question of selecting your patients cleverly. The main thing is that your conclusion is positive. If you want to go the extra pseudo-scientific mile, mention in the discussion of your paper that your participants all felt that conventional drugs were very harmful.
- Publish case reports. If your boss insists you tackle the daunting issue of therapeutic efficacy, there is no reason to give up pseudo-science either. You can always find patients who happened to have recovered spectacularly well from a life-threatening disease after receiving your favourite form of alternative medicine. Once you have identified such a person, you write up her experience in much detail and call it a ‘case report’. It requires a little skill to brush over the fact that the patient also had lots of conventional treatments, or that her diagnosis was assumed but never properly verified. As a pseudo-scientist, you will have to learn how to discretely make such irritating details vanish so that, in the final paper, they are no longer recognisable. Once you are familiar with this methodology, you can try to find a couple more such cases and publish them as a ‘best case series’ – I can guarantee that you will be all other pseudo-scientists’ hero!
- Publish a case series. Your boss might point out, after you have published half a dozen such articles, that single cases are not really very conclusive. The antidote to this argument is simple: you do a large case series along the same lines. Here you can even show off your excellent statistical skills by calculating the statistical significance of the difference between the severity of the condition before the treatment and the one after it. As long as you show marked improvements, ignore all the many other factors involved in the outcome and conclude that these changes are undeniably the result of the treatment, you will be able to publish your paper without problems.
- Rig the study design. As your boss seems to be obsessed with the RAE and all that, he might one day insist you conduct what he narrow-mindedly calls a ‘proper’ study; in other words, you might be forced to bite the bullet and learn how to plan and run an RCT. As your particular alternative therapy is not really effective, this could lead to serious embarrassment in form of a negative result, something that must be avoided at all cost. I therefore recommend you join for a few months a research group that has a proven track record in doing RCTs of utterly useless treatments without ever failing to conclude that it is highly effective. There are several of those units both in the UK and elsewhere, and their expertise is remarkable. They will teach you how to incorporate all the right design features into your study without there being the slightest risk of generating a negative result. A particularly popular solution is to conduct what they call a ‘pragmatic’ trial, I suggest you focus on this splendid innovation that never fails to produce anything but cheerfully positive findings.
- Play with statistics until you get the desired result. It is hardly possible that this strategy fails – but once every blue moon, all precautions turn out to be in vain, and even the most cunningly designed study of your bogus therapy might deliver a negative result. This is a challenge to any pseudo-scientist, but you can master it, provided you don’t lose your head. In such a rare case I recommend to run as many different statistical tests as you can find; chances are that one of them will nevertheless produce something vaguely positive. If even this method fails (and it hardly ever does), you can always home in on the fact that, in your efficacy study of your bogus treatment, not a single patient died. Who would be able to doubt that this is a positive outcome? Stress it clearly, select it as the main feature of your conclusions, and thus make the more disappointing findings disappear.
- Create confirmatory studies that follow your rigged design and faulty statistics. Now that you are a fully-fledged pseudo-scientist who has produced one misleading or false positive result after the next, you may want a ‘proper’ confirmatory study of your pet-therapy. For this purpose run the same RCT over again, and again, and again. Eventually you want a meta-analysis of all RCTs ever published. As you are the only person who ever conducted studies on the bogus treatment in question, this should be quite easy: you pool the data of all your trials and, bob’s your uncle: a nice little summary of the totality of the data that shows beyond doubt that your therapy works. Now even your narrow-minded boss will be impressed.
These nine lessons can and should be modified to suit your particular situation, of course. Nothing here is written in stone. The one skill any pseudo-scientist must have is flexibility.
Every now and then, some smart arse is bound to attack you and claim that this is not rigorous science, that independent replications are required, that you are biased etc. etc. blah, blah, blah. Do not panic: either you ignore that person completely, or (in case there is a whole gang of nasty skeptics after you) you might just point out that:
- your work follows a new paradigm; the one of your critics is now obsolete,
- your detractors fail to understand the complexity of the subject and their comments merely reveal their ridiculous incompetence,
- your critics are less than impartial, in fact, most are bought by BIG PHARMA,
- you have a paper ‘in press’ that fully deals with all the criticism and explains how inappropriate it really is.
In closing, allow me a final word about publishing. There are hundreds of alternative medicine journals out there to chose from. They will love your papers because they are uncompromising promotional. These journals all have one thing in common: they are run by apologists of alternative medicine who abhor to read anything negative about alternative medicine. Consequently hardly a critical word about alternative medicine will ever appear in these journals. If you want to make double sure that your paper does not get criticised during the peer-review process (this would require a revision, and you don’t need extra work of that nature), you can suggest a friend for peer-reviewing it. In turn, you can offer to him/her that you do the same to him/her the next time he/she has an article to submit. This is how pseudo-scientists make sure that the body of pseudo-evidence for their pseudo-treatments is growing at a steady pace.
Dr. Ernst is a PM&R specialist and the author of 48 books and more than 1000 articles in the peer-reviewed medical literature. His most recent book, Trick or Treatment? Alternative Medicine on Trial is available from amazon. He blogs regularly at EdzardErnst.com and contributes occasionally to this blog.
Comedian John Oliver did an excellent job explaining everything that’s wrong with the Dr. Oz show and the dietary supplement industry. Please watch this video for a good laugh:
I’ve been warning folks about Dr. Oz for many years – and I hope that John reaches more people with his message.
To be fair, there are reputable companies who manufacture safe and effective vitamins and supplements too, as I have noted here.
Occupational Therapy Environment, Saint Luke's Hospital, WA
For most physicians who practice inpatient medicine, acute inpatient rehabilitation facilities are mysterious places with inscrutable admissions criteria. This is partly because physical medicine and rehabilitation (PM&R) has done the poorest job of public relations of any single medical specialty (Does anyone know what we do?), and also because rehab units have been in the cross hairs of federal funding cuts for decades. The restrictive CMS criteria for inpatient rehabilitation have resulted in contortionist attempts to practice our craft in an environment where clinical judgment has been sidelined by meticulous ICD-9 coding.
But I will not bore you with the reasons behind our seemingly capricious admissions criteria. Instead I will simply tell you what they are in the simplest way possible. After much consideration, I thought it would be easiest to start with the contraindications to acute rehab – I call these “red lights.” If your patients have any of these, then they will not qualify for transfer to the acute inpatient rehab unit. I followed the absolute contraindications with relative contraindications (you guessed it, “yellow lights”) – these patients require some clinical and administrative judgment. And finally, I’ve listed the official green lights – the diagnosis codes and medical necessity rules for the ideal inpatient rehab candidate.
I hope that these rules demystify the process – and can help discharge planners, rehab admissions coordinators, and acute care attending physicians alike help to get the right patients to acute inpatient rehab.
RED LIGHT (Patient does not meet criteria, admission is not currently indicated):
- Inability to Participate: Patient cannot tolerate 3 hours of therapy per day.
- Unwillingness to participate: The patient does not wish to participate in PT/OT/speech therapies and/or shows no evidence of motivation in previous attempts to perform therapy
- Poor rehabilitation potential: The patient’s functional status is currently no different than their usual baseline. (Confirmed by previous history, medical records, or reliable source.)
- Dementia: The patient has a chronic brain deficiency that is not expected to improve and makes carryover of training unlikely or impossible.
- Doesn’t need help from at least 2 different rehab disciplines: The patient must demonstrate likely benefit from working with at least 2 of these: PT, OT, Speech.
- Acute illness or condition: The patient has an acute illness/condition requiring medical intervention prior to transfer to an acute rehab facility – these include:
- septicemia (infection with fever and elevated white count)
- delirium (medication effect, dehydration, infectious, toxic-metabolic)
- unstable vital signs (severe hyper or hypotension, severe tachy or brady arrhythmia, hypoxia despite oxygen supplementation)
- acute psychotic episode (including active hallucinations or delusions)
- uncontrolled pain (the patient’s pain is not sufficiently controlled to allow participation in therapy)
- severe anemia
- extreme fatigue or lethargy due to medical condition
- Procedure or workup pending: The patient is in the middle of a work up for DVT, cardiac disorder, stroke, infection, anemia, chest pain, bleeding, etc. or is about to undergo a procedure (surgery, imaging study, interventional or lab test) that could alter the immediate course of his/her medical/surgical management.
YELLOW LIGHT (The patient may not be a good rehab candidate, clinical/administrative judgment required regarding admission):
- Possible poor rehabilitation potential: The patient’s prior level of function (PLOF) is likely low or similar to current level, however there is no clear documentation of the patient’s PLOF. It is unclear if aggressive rehabilitation will substantially improve the patient’s functional independence.
- Unclear benefit of ARU versus SNF: The patient is unlikely to avoid future placement at a skilled nursing facility. Would it be in the patient’s best interest to transfer there directly?
- Mild dementia or chronic cognitive impairment: The patient has carryover challenges but is able to participate and follow directions. There may be family members who could benefit from PT/OT/Speech training so they can take the patient home and be his/her caregiver(s).
- Unclear safe discharge plan: The patient lives alone or has no family support or has no financial means to improve their living conditions or their home is unfit for living/safe discharge or patient refusing SNF but qualifies otherwise.
- Insurance denial: The patient’s insurer declines their inpatient rehab stay. Physiatrist may attempt to overturn decision or facility may wish to take patient on a pro bono status. Uninsured patients may be candidates for emergency Medicaid. Facility must decide if they will lobby for it.
- Severe behavioral disorders (unrelated to acute TBI): Verbally abusive, violent, inappropriate or disruptive to other patients.
- The patient meets medical necessity criteria for acute inpatient rehab but their impairment is not represented by one of the 13 impairment categories approved by CMS. (E.g. medical debility, cardiac impairment, pulmonary disease, cancers, or orthopedic injury without required comorbidities). Admission may depend upon individual facility’s case mix and its current annual compliance rate with 60% rule.
GREEN LIGHT (The patient is a good candidate for acute inpatient rehab if they have no red or yellow lights, meet criteria for medical necessity AND meet the impairment categories listed below):
MEDICAL NECESSITY DEFINITION:
Acute inpatient rehabilitation services are medically necessary when all of the following are present:
- Individual has a new (acute) medical condition or an acute exacerbation of a chronic condition that has resulted in a significant decrease in functional ability such that they cannot adequately recover in a less intensive setting; AND
- Individual’s overall medical condition and medical needs either identify a risk for medical instability or a requirement for physician and other personnel involvement generally not available outside the hospital inpatient setting; AND
- Individual requires an intensive inter-disciplinary, coordinated rehabilitation program (as defined in the description of service) with a minimum of three (3) hours active participation daily; AND
- Individual is medically stable enough to no longer require the services of a medical/surgical inpatient setting; AND
- The individual is capable of actively participating in a rehabilitation program, as evidenced by a mental status demonstrating responsiveness to verbal, visual, and/or tactile stimuli and ability to follow simple commands. For additional information regarding cognitive status, please refer to the Rancho Los Amigos Cognitive Scale (Appendix B); AND
- Individual’s mental and physical condition prior to the illness or injury indicates there is significant potential for improvement; (See Note below) AND
- Individual is expected to show measurable functional improvement within a maximum of seven (7) to fourteen (14) days (depending on the underlying diagnosis/medical condition) of admission to the inpatient rehabilitation program; AND
- The necessary rehabilitation services will be prescribed by a physician, and require close medical supervision and skilled nursing care with the 24-hour availability of a nurse and physician who are skilled in the area of rehabilitation medicine; AND
- Therapy includes discharge plan.
13 Diagnosis Codes Approved by CMS for Acute Inpatient Rehab
2. Spinal cord injury
3. Congenital deformity
5. Major multiple trauma
6. Fracture of femur (hip fracture)
7. Brain injury
8. Neurological disorders, including:
• Multiple sclerosis
• Motor neuron diseases (Guillain Barre, ALS)
• Muscular dystrophy
• Parkinson’s disease
10. Arthritis: Active polyarticular rheumatoid arthritis, psoriatic arthritis, and seronegative arthropathies
resulting in significant functional impairment of ambulation and other activities of daily living;
11. Vasculitis: Systemic vasculidities with joint inflammation resulting in significant functional impairment of ambulation and other activities of daily living
12. Severe or advanced osteoarthritis (osteoarthrosis or degenerative joint disease) involving two or more weight bearing joints (elbow, shoulders, hips, or knees but not counting a joint with a prosthesis) with joint deformity and substantial loss of range of motion, atrophy of muscles surrounding the joint, and significant functional impairment of ambulation and other activities of daily living
13. Knee or hip joint replacement, or both, during an acute care hospitalization immediately preceding the inpatient rehabilitation stay and also meets one or more of the following specific criteria:
- The patient underwent bilateral knee or bilateral hip joint replacement surgery during the acute care hospital admission immediately preceding the IRF admission
- The patient is extremely obese with a Body Mass Index of at least 50 at the time of admission to the IRF or
- The patient is age 85 or older at the time of admission to the IRF.