| Code | Display | Definition |
| A | Point of service | Systems that facilitate the provision and delivery of healthcare services to persons at the point of care. |
| A1 | Communication systems | Systems that are used to transfer electronic information. Messages can be exchanged between healthcare providers or between healthcare providers and persons. |
| A2 | Community-based information systems | Applications that facilitate data collection and use at the community level, utilised by community-based workers who provide health promotion and disease prevention activities. |
| A3 | Decision support systems | Computer based tools which combine medical information databases and algorithms with patient specific data, intended to provide healthcare professionals and/or users with recommendations for diagnosis, prognosis, monitoring and treatment. |
| A4 | Diagnostics information systems | Systems for diagnostic applications found in devices (software in a medical device), wearables that collect health data, radiology information systems, medical imaging systems, and picture archiving and communication systems (PACS). |
| A5 | Electronic medical record systems | A secure, online system that holds information about people's health and clinical care, managed by healthcare providers. Also known as electronic health record (EHR). |
| A6 | Laboratory information systems | Systems that support the process from patient sample to patient result, including lab requests/test ordering, sample tracking and processing, and results reporting. |
| A7 | Personal health records | A digital personal health record is a record of an individual's health information in a structured digital format, over which the person has agency. |
| A8 | Pharmacy information systems | Systems that manage prescriptions, dispensing, stock and billing for medicines and health products. |
| A9 | Telehealth systems | Systems that enable remote clinical consultation, monitoring and diagnosis between persons and healthcare providers at a distance. |
| B | Health system/Provider administration | Systems that support the administrative and managerial functions of health systems and healthcare organisations. |
| B1 | Blood bank information management systems | Systems for managing the collection, testing, processing, storage, and distribution of blood and blood products. |
| B2 | Health finance-related information systems | Systems that manage health financing, insurance enrolment, claims, billing, reimbursement, and budgeting. |
| B3 | Health program monitoring systems | Systems used to collect and analyse aggregate health data for programme planning, monitoring and evaluation. |
| B4 | Human resource information systems | Systems for managing health workforce data including cadres, deployment, credentials, performance and payroll. |
| B5 | Learning and training systems | Systems for delivering, tracking, and assessing training and professional development of health workers. |
| B6 | Logistics management information systems (LMIS) | Systems for managing the health supply chain from forecasting to distribution and stock monitoring. |
| B7 | Patient Administration systems | Systems that manage patient administrative information including admissions, discharges, transfers, appointments and billing. |
| B8 | Research information systems | Systems that support the design, conduct, data management and reporting of health research and clinical trials. |
| C | Registries and Directories | Systems that create, maintain, and provide authoritative master records for persons, providers, facilities, products and health events. |
| C1 | Census and population information systems | Systems that collect, store, and manage population-level demographic data including census information. |
| C2 | Civil registration and vital statistics (CRVS) systems | Systems that register and certify vital events such as births, deaths, marriages and their underlying causes. |
| C3 | Facility management information systems | Systems for managing health facility information, infrastructure, equipment, capacity and assessments. |
| C4 | (Health) Facility registries | Master lists of health facilities with unique identifiers, locations, services offered, and operational information. |
| C5 | Health worker registry | Systems maintaining authoritative directories of health workforce cadres, credentials, and deployment information. |
| C6 | Identification registries and directories | Systems that create, maintain, and verify unique identities for persons, healthcare providers, and other health actors. |
| C7 | Immunization information systems | Systems for recording, tracking, and reporting individual and population-level immunization history and coverage. |
| C8 | Master patient index | Systems that uniquely identify and link patient records across multiple health information systems and facilities. |
| C9 | Product catalogues | Systems that maintain authoritative lists of approved health commodities, medicines, devices and equipment. |
| C10 | Public Key directories | Systems that manage and distribute public cryptographic keys to support digital signature and identity verification. |
| C11 | Terminology and classification systems | Systems for managing and applying standardised clinical terminologies, ontologies, and health classifications. |
| D | Data Management services | Services and systems that support the collection, aggregation, storage, analysis, and exchange of health data. |
| D1 | Analytics Systems | Systems that process and analyse health data to produce insights, dashboards, reports and predictive models. |
| D2 | Data interchange and interoperability | Systems and standards that enable health data exchange between disparate systems, including APIs, messaging standards, and interoperability platforms. |
| D3 | Data warehouses | Systems that consolidate and store large volumes of historical health data from multiple sources for analysis and reporting. |
| D4 | Environmental monitoring systems | Systems that monitor environmental determinants of health such as air quality, water safety and vector habitats. |
| D5 | Geographic information systems (GIS) | Systems that capture, analyse and visualise geospatial health data for mapping health events, facilities, and populations. |
| D6 | Health Management Information systems (HMIS) | Systems for aggregate health data reporting, target-setting, and programme monitoring, typically at district and national levels. |
| D7 | Knowledge management systems | Systems for curating, organising and disseminating clinical guidelines, protocols, and health knowledge resources. |
| D8 | Shared Health Record and Health Information Repository | Systems that aggregate and share longitudinal health records across facilities and providers. |
| E | Surveillance and Response | Systems that support the detection, monitoring, and response to disease outbreaks and public health threats. |
| E1 | Emergency preparedness and response systems | Systems that coordinate emergency medical services, disaster preparedness, and mass casualty management. |
| E2 | Public health and disease surveillance systems | Systems for detecting, monitoring, investigating and responding to disease outbreaks and public health threats. |