Assessing Patient Capacity for Refusing Medical Examination

Introduction to Capacity Assessment

The American Society of Anesthesiologists recommends that capacity must be formally assessed, never assuming incapacity based on diagnosis, age, appearance, or the fact that the refusal seems irrational 1, 2
A patient has capacity if they can demonstrate all four elements: understanding, appreciation, reasoning, and communication, as stated by the American Medical Association 3

The American College of Physicians states that capacity is decision-specific, and a patient may have capacity to refuse a simple examination but lack capacity for complex treatment decisions 1, 2
If a patient has capacity, their refusal of examination is legally binding, even if it will result in the patient's death, as per the American Bar Association 1, 2
The refusal does not need to be sensible, rational, or well-considered to be valid, according to the American Medical Association 1, 2

The National Institute for Health and Care Excellence recommends that if a patient lacks capacity, the decision-maker must follow a structured decision-making process, considering the patient's welfare in the widest sense, including medical, social, and psychological factors 5, 6, 2
The decision-maker should evaluate the nature of the examination/testing, what it involves, and prospects of benefit, as stated by the American College of Physicians 3
The American Academy of Family Physicians suggests putting oneself in the patient's place and considering what their attitude would likely be, as well as consulting family members and others close to the patient for their view 5

The Joint Commission recommends creating a clear record including grounds for determining lack of capacity, the examination/testing that will be undertaken, and how this serves the patient's best interests 5, 3
The American Health Information Management Association states that the record should also include consultation with surrogates or family, previously expressed wishes or values of the patient, and specific examples of incapacity 3, 7

The American Medical Association advises never assuming incapacity based on mental illness, psychiatric hold status, confusion, or dementia diagnosis alone, as these patients may still have capacity for specific decisions 1, 8
The American College of Physicians warns against confusing psychiatric commitment criteria with medical capacity, as civil commitment permits psychiatric detention but does not authorize involuntary medical treatment 8