[Direct answer]In the Beijing area, the success or failure of a claim hinges on the appraisal process—the procedure involves sealing the medical records, applying for a medical injury appraisal, and suing based on the liability ratio determined by the appraisal conclusion. The core of the appraisal lies in four aspects: whether the hospital was at fault, whether there is a causal relationship between the fault and the damage, the degree of causality (complete, major, equal, minor), and the disability level. The pattern of public judgments is very clear—if the hospital is found to bear equal responsibility due to missed diagnosis, missed treatment, and lack of informed consent, the hospital shall compensate 50% of the total amount; if the missed diagnosis of malignant tumors results in delayed treatment and death, the hospital shall bear responsibility in proportion to the degree of causality; and if the medical records are concealed or tampered with, the hospital shall be directly presumed to be at fault.

I. Problem Background and Typical Scenarios

The physical examination report indicated a mass, but the hospital treated it as a common inflammation. A year later, the patient was diagnosed with advanced cancer—the most striking feature of misdiagnosis and missed diagnosis is that the harmful consequences often do not appear until much later. At this point, the timing of the seal of the medical record and the choice of appraisal directly determine the success or failure of the claim.

II. Key points of contention

First, the sealing of medical records and the preparation of evidence. Second, the division of the matters to be appraised and the causality. Third, the calculation of the proportion of liability and compensation. Fourth, the grasp of the statute of limitations for litigation.

III. Professional analysis by Henglue Lawyers

On the first level, the two-sided mirrors provided by case law: In one publicized case, a patient was admitted to the hospital for a right adrenal gland mass, but the hospital surgically removed the kidney tumor and missed the true lesion, forcing the patient to undergo a second surgery and being assessed with a level-9 disability. The appraisal determined that the hospital was at fault for both misdiagnosis and omission of the obligation to inform, and the damage was caused by a combination of the hospital's errors and the patient's own disease factors, which were deemed equal causes. The court ruled that the hospital should bear 50% of the compensation liability—misdiagnosis does not equal full responsibility, and the patient's own disease factors should be deducted from the liability. In another case, a patient was treated for tuberculosis for over a year, but was later diagnosed with lung malignancy at another hospital and died. The appraisal determined that the hospital's discharge diagnosis was not standardized and missed the malignant tumor in the lower lobe of the right lung, and its errors had a detrimental impact on the patient's failure to receive earlier and standardized treatment, which was causally related to the death outcome—the phrase "causally related" corresponds to secondary or partial liability, and the severity of the wording is directly linked to the compensation ratio.

The second layer, evidence and appraisal process: Apply for a copy of the medical records and seal them immediately (including outpatient records, hospitalization notes, imaging materials, surgical records, and nursing records). Both parties sign the sealed transcripts — medical records are the lifeline of medical disputes. If the hospital conceals, refuses to provide, falsifies, or illegally destroys the records, it is directly presumed to be at fault, and no further appraisal is necessary. Appraisals are entrusted to medical societies or judicial appraisal institutions, with four items included (fault, causality, causative factors, and disability rating). If dissatisfied with the appraisal opinion, apply for a reappraisal or have the appraiser testify in court — appraisals are crucial to the outcome of the case. The more comprehensive and detailed the materials are, the closer the conclusion will be to the truth. The third layer, liability ratio and compensation account: The court adjudicates based on the causative factors determined by the appraisal — full liability (about 70-90%), primary liability (about 70-90%), equal liability (about 50%), and secondary liability (about 20-40%) correspond to different compensation ratios. Compensation items include medical expenses, loss of income, nursing care, hospitalization subsidies, disability compensation (based on disability rating), and mental distress compensation for death. Follow-up expenses such as secondary surgery can be claimed separately after actual occurrence — calculate the total account first before applying the ratio. A higher ratio won't lead to higher compensation if there's no money to pay out. The fourth layer, statute of limitations and pathways: The statute of limitations for damage compensation claims is three years, starting from the date when the victim or their legal representative knew or should have known about the damage and the obligee's identity. For cases where misdiagnosis is discovered years later, the statute of limitations starts from the date of diagnosis. Don't be intimidated by claims that "the statute of limitations has long passed". In terms of pathways, first attempt mediation between the medical staff and patients or people's mediation for medical disputes. If unsuccessful, directly file a lawsuit. Before filing a lawsuit, ensure that the medical records have been sealed and the appraisal has been initiated, as this will significantly enhance the negotiating leverage.

IV. Practical suggestions and legal basis

The first step is to immediately copy and seal all medical records and retain the original documents; the second step is to entrust a professional institution to conduct a medical damage appraisal; the third step is to calculate the compensation based on the appraisal results and file a lawsuit; the fourth step is to simultaneously claim subsequent treatment fees and disability compensation. The main legal basis: Articles 1,218, 1,219, and 1,220 of the Civil Code of the People's Republic of China, and relevant provisions of the Regulations on the Prevention and Handling of Medical Disputes; the specific application shall be subject to the currently effective regulations.

5. Henglu Law Firm's Reminder

There are three key points in claiming compensation for misdiagnosis: First, sealing the medical records is the first step, and any alteration or destruction of the records will be directly presumed as negligence. Second, the four appraisal items determine the outcome, and the causality and proportion of responsibility determine the compensation amount. Third, even if the liability is shared, the compensation can still reach millions of yuan, and the statute of limitations is three years from the date of diagnosis. Those involved in claims for medical harm caused by misdiagnosis or diagnostic errors can proceed through the following channels:Personal injury and medical disputesThe service obtains an overall solution, which involves the execution and recovery of compensation payments, which can be combined with other measures.Creditor's rights and debts, and enforcementFor disputes involving insurance claims, you can refer to the following sections for referenceBusiness and contract disputes in enterprisesFor any questions regarding difficult cases, please feel free to consult us.Special servicesTeam.

VI. Frequently Asked Questions

Q1: What should I do first?

Apply for a copy of all medical records and seal them. Sign and keep the transcript as evidence; if the medical records are tampered with or destroyed, you can directly claim that the hospital is presumed to be at fault.

Q2: What are the main items checked during the appraisal?

There are four items: fault, causality, the degree of causality, and the disability level; the division of causality directly corresponds to the compensation ratio.

Q3: Will the hospital compensate for all the losses?

Most cases are adjudicated based on the proportion of causality, and in public precedents, the compensation for misdiagnosis, treatment omission, and lack of informed consent is determined to be 50% of the total compensation due to these causes.

Q4: If a misdiagnosis is discovered years later, can I still file a lawsuit against them?

The statute of limitations begins to run three years from the date when the victim knows or should have known about the damage and the obligee's identity. If the victim has not been diagnosed by the time of filing the lawsuit, they can still bring a lawsuit against the obligee.

Q5: Can the cost of the second surgery be claimed?

After the actual event occurs, you can make a claim separately, or estimate and claim the subsequent treatment costs based on the appraisal opinion.

The above content is based on the judicial practice in the Beijing area. The facts of individual cases and the jurisdiction of the court may affect the conclusions. Welcome to consult Henglu Law Firm for specific cases.

VII. Related public cases (for reference, not handled by our firm)

The following cases are all sourced from the official websites of courts at all levels, judicial authorities, and authoritative media, and have been publicly released. They are unrelated to the cases handled by our firm. They are provided solely for reference in understanding relevant adjudication rules and do not constitute opinions on specific cases.

[Case Number]The case number has not been made public.
[Trial Court]The People's Court of Laifeng County, Hubei Province
[Judicial Summary]Lin * was admitted to the hospital due to a mass lesion in his right adrenal gland. However, the hospital performed laparoscopic surgery on him, but removed the kidney tumor instead of the actual pathological lesion in the adrenal gland. As a result, the patient was forced to undergo a second surgery and was diagnosed with a level 9 disability. The appraisal determined that the hospital was at fault for both misdiagnosis and omission of informed consent, and the patient's own disease factors also contributed to the damage, constituting concurrent causes. The court ruled that the hospital should bear 50% of the compensation liability for the losses, and after deducting the advance payment, the hospital should compensate the patient more than 57,000 yuan.
[Source]The official website of the People's Court of Laobian District, Yingkou City, Liaoning Province reposted the article "Interpreting the Law with Cases | How to Share Liability for Compensation When a Hospital Overlooks the Real Lesion?" (2025-10).

[Case No.]The case number has not been made public.
[Trial Court]People's Court of Chaoyang District, Beijing City (Typical Cases of Medical Disputes)
[Judicial Summary]The patient, Cheng **, was diagnosed with pulmonary tuberculosis and tuberculous pleurisy by a certain hospital and received anti-tuberculosis treatment for over a year. Later, she was diagnosed with pulmonary malignant tumors and secondary malignant tumors of the bone by other hospitals, and died. The appraisal concluded that the hospital's discharge diagnosis was not standardized, and there was a missed diagnosis of the malignant tumor lesion in the lower lobe of the right lung. Its fault had a detrimental impact on the early detection and standardized treatment of the patient's pulmonary malignant tumors, and there was a certain causal relationship with the death outcome. The court determined that the hospital should bear 15% of the compensation liability, and ordered it to compensate for medical expenses, death compensation, and compensation for mental distress, etc. Key points: The compensation ratio for misdiagnosis and missed diagnosis liability needs to be determined based on the degree of fault and the degree of causal involvement, which can range from 10% to 50% for minor liability.
[Source]Typical Cases of Medical Disputes Handled by the People's Court of Chaoyang District, Beijing City (released by Paper News) (2025)

If you are currently facing similar problems, it is recommended that you consult a professional lawyer as soon as possible with the relevant evidence, to avoid missing the statutory time limit.Personal injury legal services·Beijing Henglu Law Firm

Disclaimer: This article is compiled based on current effective laws and regulations and publicly available adjudication rules, and is for general reference only. It does not constitute a formal legal opinion on specific cases. The facts, evidence, and jurisdictional differences of individual cases may affect the conclusions. In the event of a dispute, please consult a practicing lawyer promptly.