haau3 FHIR Implementation Guide (HFIG)
0.1.0 - ci-build
haau3 FHIR Implementation Guide (HFIG)
0.1.0 - ci-build
haau3 FHIR Implementation Guide (HFIG), published by haau3. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/haau3/fhir-ig/ and changes regularly. See the Directory of published versions
| Official URL: https://haau3.com/fhir/ImplementationGuide/haau3.fhir | Version: 0.1.0 | |||
| Draft as of 2026-03-09 | Computable Name: haau3 | |||
According to AARP's 2025 Caregiving Report, roughly one in four Americans (63 million) is a family caregiver in America. A dramatic increase of 45% since 2015. These family caregivers, thereafter just caregivers for short, are family, friends, and children that come from all racial, ethnic, and socioeconomic backgrounds. These caregivers assist with activities of daily living (ADL) like bathing, dressing, and feeding, but also instrumental activities of daily living (IADL) like managing finances and coordinating transportation. 59 million reportedly are caring for adults aged 18 or older and 4 million are caring for children under age 18 with an illness or disability.
For caregivers, balancing their caregiving duties with work is a challenge. Seven in ten are are gainfully employed, but half report experiencing some work disruption that include arriving late, leaving early, or taking time off to care for their loved ones. Working caregivers also report experiencing more isolation (25%), taking on more debt (22%), using up short-term savings (31%), or late to paying their bills or leaving them unpaid (19%).
The AARP report reveals a growing population of caregivers that are strained, under-supported, and often invisible. However, it also provides a comprehensive look into the state of caregiving in the US to enable our nation to form better economic, financial, and health policies to support our nation's caregivers and the individuals they care for.
Haau3 is a FHIR-native, AI-powered companion to help caregivers focus on the human side of care by automating as much of the administrative burden as possible.
The haau3 FHIR Implementation Guide (HFIG) is designed to solve the interoperability problems that generate many of the administrative burdens that caregivers face. The scope will focus on caregiver and patient-mediated use cases with a priority on the following key areas:
To take advantage of the latest technology innovations, HFIG will be anchored on the following FHIR Artifacts
| Implementation Guide | Version(s) | Reason |
|---|---|---|
| Bulk Data Access IG | 2.0.0 | Imported by US Core (and potentially others) |
| CARIN Consumer Directed Payer Data Exchange (CARIN IG for Blue Button®) | 2.1.0 | For ingesting the common payer consumer data set (CPCDS) |
| FHIR Extensions Pack | 5.2.0 | Automatically added as a dependency - all IGs depend on the HL7 Extension Pack |
| 1.0.0 | Imported by US Core (and potentially others) | |
| FHIR R4 package : Core | 4.0.1 | Imported by HL7 Terminology (THO) (and potentially others) |
| HL7 Terminology (THO) | 7.0.1 | Automatically added as a dependency - all IGs depend on HL7 Terminology |
| 6.5.0 | Imported by International Patient Summary (and potentially others) | |
| 6.2.0 | Imported by International Patient Access (and potentially others) | |
| 5.0.0 | Imported by US Core (and potentially others) | |
| IHE FormatCode Vocabulary | 1.1.0 | Imported by US Core (and potentially others) |
| International Patient Access | 1.1.0 | Imported by International Patient Summary (and potentially others) |
| International Patient Summary | 2.0.0 | For aligning on minimal data elements for sharing |
| Public Health Information Network Vocabulary Access and Distribution System (PHIN VADS) | 0.12.0 | Imported by US Core (and potentially others) |
| SMART App Launch | 2.1.0 | Imported by US Core (and potentially others) |
| 2.0.0 | Imported by International Patient Access (and potentially others) | |
| Structured Data Capture | 3.0.0 | For using Questionnaire and related resources for data capture |
| US Core | 6.1.0 | To set a baseline for all profiles |
| 3.1.1 | Imported by CARIN Consumer Directed Payer Data Exchange (CARIN IG for Blue Button®) (and potentially others) | |
| Value Set Authority Center (VSAC) | 0.21.0 | Imported by CARIN Consumer Directed Payer Data Exchange (CARIN IG for Blue Button®) (and potentially others) |
| 0.11.0 | Imported by US Core (and potentially others) |
Brian K Fung - brian@briankfung.com
This implementation guide and the underlying FHIR Specification are licensed as public domain under the FHIR license. Further, this guide includes examples making use of terminologies such as LOINC, SNOMED CT and others that have more restrictive licensing requirements. Implementers should make themselves familiar with licensing and any other constraints of terminologies and other components used as part of their implementation process.
This publication includes IP covered under the following statements.