Misdiagnosis compensation varies enormously depending on the severity of the harm caused by the delay or error, ranging from a few thousand pounds for short-lived, fully-recovered harm to several hundred thousand pounds for catastrophic, permanent harm. Compensation is typically split into general damages (pain, suffering and loss of amenity) and special damages (financial losses such as lost earnings, care costs and medical expenses). Only a solicitor reviewing your medical records can give an accurate valuation.

Misdiagnosis means a condition was identified incorrectly, such as being told a tumour is benign when it is malignant. A missed or delayed diagnosis means a condition was not identified at all, or not identified until a later stage. Both can form the basis of a medical negligence claim if a reasonably competent clinician would have diagnosed the condition correctly or sooner, and the delay caused additional harm.

Yes. In UK medical negligence law you must prove both breach of duty (that the care fell below an acceptable standard) and causation (that this breach caused or worsened harm that would not otherwise have occurred). A misdiagnosis that did not change the outcome or treatment, even if technically incorrect, may not give rise to a successful compensation claim.

In England and Wales, the general time limit for medical negligence claims is three years from the date of the negligent act, or three years from the date you first became aware (or could reasonably have become aware) that the harm was caused by substandard care, known as the date of knowledge. Different rules apply to children and those who lack mental capacity. Seeking advice promptly is strongly recommended.

A misdiagnosis claim can include general damages for pain, suffering and loss of amenity, plus special damages covering past and future loss of earnings, care and assistance costs, private medical or rehabilitation costs, travel expenses related to treatment, and home or vehicle adaptations where the harm has caused lasting disability. The exact heads of loss depend on the specific facts of the case.

General damages are typically assessed using the Judicial College Guidelines, a reference book of compensation brackets for different injuries and severities used by solicitors, barristers and judges across the UK. The guidelines are advisory rather than binding, and the final figure within a bracket depends on factors such as ongoing pain, impact on daily life, prognosis, and any psychological harm caused by the delay or error.

Yes. Claims against NHS hospitals, GP practices and other NHS bodies are generally handled by NHS Resolution, the body responsible for managing clinical negligence claims on behalf of the NHS in England. Claims against private healthcare providers follow a similar legal process but are pursued directly against the provider or their insurer rather than NHS Resolution.

No. This calculator produces a broad, illustrative estimate range only, based on general severity bands and the figures you enter. It is not legal advice, not a quote, and cannot account for the specific medical evidence, causation arguments, contributory factors or case law that determine an actual settlement or court award. Always consult a qualified clinical negligence solicitor for an accurate assessment.