Medical legal fundamentals and legal process
What this domain tests
This domain tests how medical opinions enter legal decision-making: the difference between clinical and legal questions, the burdens and standards that govern claims, and the procedural rules that shape admissible evidence. You need to know who may opine, on what basis, and when privilege or discovery limits apply.
Core rules and concepts
- Sources of law include constitutions, statutes, regulations, case law, and agency guidance. Administrative workers compensation systems apply their own filing, hearing, and appeal rules; exhausting those remedies is usually required before court review.
- Burdens: civil claims generally require proof by a preponderance of the evidence; some issues require clear and convincing evidence. The expert's medical probability language must match the legal standard asked.
- Causation has medical and legal components. Civil tort law uses but-for and proximate or substantial-factor tests; workers compensation uses arising out of and in the course of employment, with special rules for occupational disease and repetitive trauma. A physician should give a medical causation opinion, not a legal conclusion such as the employer is liable.
- Roles: treating clinician, treating physician who also gives an opinion, independent medical examiner, and retained expert are different roles. The treating relationship creates duties; an IME generally does not.
- Privilege and privacy: physician-patient privilege is not absolute; it is commonly waived or limited when the patient puts health at issue, and HIPAA permits defined disclosures for claims, but state law and ex parte rules still govern.
- Evidence reliability: expert testimony must rest on reliable methods and fit the facts; Colorado courts apply a reliability screening often described as the Shreck standard, similar in function to Daubert.
Worked example
A 55-year-old worker has years of kneeling and a new meniscal tear. The question Did work cause the arthritis? is not the same as Is the employer liable? The examiner should separate the acute tear (mechanism, effusion, MRI, temporal link) from long-standing osteoarthritis (prior imaging, pain history, degeneration). The report can say the tear is work-related to a reasonable degree of medical probability and that the arthritis pre-existed; it should not declare legal liability.
Traps that cost marks
Treating a legal standard as a medical diagnosis; using possible when the standard requires probability; assuming privilege bars all disclosure; confusing an IME with a treating relationship; ignoring agency deadlines and exhaustion; and opining on ultimate legal issues outside the medical role.