Digital health is where care meets software directly. Its companies keep the patient record, write the doctor's note, run the front desk, the online consultation, the care of a condition over months and the pharmacy, like ModMed, Netsmart, Practo, Dexcom and PharmEasy, and the whole picture is on the Digital health page.

Health insurance and billing is the money behind the care. Its companies turn a visit into a paid claim, run the insurer's side of that claim and make the scattered data usable, like Inovalon, Availity, HealthEdge, Cohere Health and Innovaccer, and more is on the Health insurance and billing page.

Hospitals, diagnostics and medical devices are the equipment of medicine. The companies here run the hospital, the lab and the scan, and make the implants, robots and monitors used in treatment, like symplr, Beckman Coulter Diagnostics, GE HealthCare, Qure.ai and Medtronic, and more is on the Hospitals, diagnostics and medical devices page.

Pharma and life sciences is where medicines come from. Its companies help find a molecule, test it in the lab and in trials, make it, sell it and learn what it did for real patients, like Thermo Fisher Scientific, Veeva Systems, ValGenesis, Axtria and Truveta, and more is on the Pharma and life sciences page.

The patient's record is the thread that runs through the whole Domain. It is written in Digital health, by the clinic's record system and now by AI scribes. It becomes a claim in Health insurance and billing, and platforms like Innovaccer gather it with the records of every other provider. Years later the same records, stripped of names, become evidence in Pharma and life sciences, where Truveta pools the records of American health systems to show what a medicine did for millions of patients. Companies cross these lines along the way. eHealth Technologies fetches records both for referrals and for clinical trials, and Quest Diagnostics sells the software through which doctors order its tests and receive the results.

Devices and data blur the borders too. A continuous glucose monitor from Dexcom is both a medical device and the heart of digital programmes for managing diabetes. Clario reads the scans and ECGs taken during drug trials, and Guardant Health's blood tests for cancer belong both to diagnostics and to drug research. A modern pacemaker, insulin pump or surgical robot is as much software as hardware, connected to an app and a cloud.

What ties the Domain together for an engineer is regulation and paperwork. Software inside a device or a drug plant has to be proved safe, so test engineers are in strong demand in devices and pharma. Patient data has to move in agreed standards and stay private, so healthtech software engineers are common in records and billing. And much of this industry's work is reading free text and filling in forms, from the doctor's note to the prior authorisation and the trial protocol, and that is the work AI models are taking on in all four Industry Verticals.