For buyers contracting authority
The boundary that trips contracting authorities is Patient-administration system (48814200). That code is the administrative spine: registration, admissions, transfers, discharges, and the master patient index. 48814400 is the clinical layer that sits on top of it, holding the care record clinicians read and write during treatment. Tag by what the contract is actually for.
Choose 48814400 when the deliverable supports care at the point of delivery: observations capture, ePrescribing, results review, clinical decision support, or a specialty system for critical care or oncology. If the main job is booking, tracking and discharging patients, that is administration, and 48814200 is the better pick.
Two neighbours frame the rest. Nursing information system (48814100) is the right code when the record is specifically the nursing care plan, and the parent Medical information systems (48814000) is the catch-all when a single procurement spans several of these layers at once. Where a deal bundles clinical and administrative modules, set the primary CPV code by the dominant deliverable.