Prognosis
A clinician's forecast of the likely course and outcome of a disease, including chances of recovery, recurrence, or survival. It is informed by diagnosis, disease stage, patient factors, and evidence on comparable cases.
What is a prognosis?
A prognosis is a clinician's informed prediction of how a patient's condition is likely to unfold over time, including the expected pace of progression, the odds of recovery or relapse, and, for serious illness, projected survival. It answers the question of what comes next once a diagnosis has been established.
A prognosis draws on the specific diagnosis, the stage or severity of disease, the patient's age and overall health, and outcome evidence from comparable cases. Because it rests on probabilities rather than certainties, a prognosis is usually expressed in ranges or likelihoods rather than fixed outcomes.
Why does prognosis matter in care delivery?
Prognosis shapes nearly every downstream decision: which treatments are worth pursuing, how aggressively to intervene, what to tell patients and families, and how to plan follow-up. A realistic forecast helps align care with patient goals and avoid both undertreatment and futile, burdensome interventions.
It also informs operational and financial planning. Expected recovery trajectories influence scheduling, the intensity of post-procedure monitoring, and the documentation that supports medical necessity, all of which connect clinical judgment to how care is organized and reimbursed.
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