SGHI FHIR Profile Implementation Guide
0.1.0 - ci-build

SGHI FHIR Profile Implementation Guide, published by Kathurima Kimathi. 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/savannahghi/sil_fhir_profile_ig/ and changes regularly. See the Directory of published versions

## Data Type Profile: SGHIContactPoint - Detailed Descriptions

Draft as of 2026-05-21

Definitions for the contact-point data type profile.

- Key Elements Table
- Differential Elements Table
- Snapshot Elements Table

Guidance on how to interpret the contents of this table can be foundhere

0. ContactPoint
Definition | Details for all kinds of technology mediated contact points for a person or organization, including telephone, email, etc.
Short | Details of a Technology mediated contact point (phone, fax, email, etc.)
Control | 0..*
Is Modifier | false
Invariants | cpt-2: A system is required if a value is provided. (value.empty() or system.exists()) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
2. ContactPoint.system
Definition | Telecommunications form for contact point - what communications system is required to make use of the contact.
Short | phone | fax | email | pager | url | sms | other
Control | 10..1 This element is affected by the following invariants: cpt-2
Binding | The codes SHALL be taken from ContactPointSystem http://hl7.org/fhir/ValueSet/contact-point-system|5.0.0 (required to `http://hl7.org/fhir/ValueSet/contact-point-system|5.0.0` ) Telecommunications form for contact point.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. ContactPoint.value
Definition | The actual contact point details, in a form that is meaningful to the designated communication system (i.e. phone number or email address).
Short | The actual contact point details
Comments | Additional text data such as phone extension numbers, or notes about use of the contact are sometimes included in the value.
Control | 10..1 This element is affected by the following invariants: cpt-2
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Need to support legacy numbers that are not in a tightly controlled format.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
6. ContactPoint.use
Definition | Identifies the purpose for the contact point.
Short | home | work | temp | old | mobile - purpose of this contact point
Comments | Applications can assume that a contact is current unless it explicitly says that it is temporary or old.
Control | 0..1
Binding | The codes SHALL be taken from ContactPointUse http://hl7.org/fhir/ValueSet/contact-point-use|5.0.0 (required to `http://hl7.org/fhir/ValueSet/contact-point-use|5.0.0` ) Use of contact point.
Type | code
Is Modifier | true because This is labeled as "Is Modifier" because applications should not mistake a temporary or old contact etc.for a current/permanent one
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Need to track the way a person uses this contact, so a user can choose which is appropriate for their purpose.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

Guidance on how to interpret the contents of this table can be foundhere

0. ContactPoint
2. ContactPoint.system
Control | 1..?
4. ContactPoint.value
Control | 1..?

Guidance on how to interpret the contents of this table can be foundhere

0. ContactPoint
Definition | Details for all kinds of technology mediated contact points for a person or organization, including telephone, email, etc.
Short | Details of a Technology mediated contact point (phone, fax, email, etc.)
Control | 0..*
Is Modifier | false
Invariants | cpt-2: A system is required if a value is provided. (`value.empty() or system.exists()`) ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
2. ContactPoint.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1 This element is affected by the following invariants: ele-1
Type | id
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
4. ContactPoint.extension
Definition | May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing | This element introduces a set of slices on `ContactPoint.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
6. ContactPoint.system
Definition | Telecommunications form for contact point - what communications system is required to make use of the contact.
Short | phone | fax | email | pager | url | sms | other
Control | 1..1 This element is affected by the following invariants: cpt-2
Binding | The codes SHALL be taken from ContactPointSystem (required to `http://hl7.org/fhir/ValueSet/contact-point-system|5.0.0` ) Telecommunications form for contact point.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
8. ContactPoint.value
Definition | The actual contact point details, in a form that is meaningful to the designated communication system (i.e. phone number or email address).
Short | The actual contact point details
Comments | Additional text data such as phone extension numbers, or notes about use of the contact are sometimes included in the value.
Control | 1..1 This element is affected by the following invariants: cpt-2
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Need to support legacy numbers that are not in a tightly controlled format.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
10. ContactPoint.use
Definition | Identifies the purpose for the contact point.
Short | home | work | temp | old | mobile - purpose of this contact point
Comments | Applications can assume that a contact is current unless it explicitly says that it is temporary or old.
Control | 0..1
Binding | The codes SHALL be taken from ContactPointUse (required to `http://hl7.org/fhir/ValueSet/contact-point-use|5.0.0` ) Use of contact point.
Type | code
Is Modifier | true because This is labeled as "Is Modifier" because applications should not mistake a temporary or old contact etc.for a current/permanent one
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Requirements | Need to track the way a person uses this contact, so a user can choose which is appropriate for their purpose.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
12. ContactPoint.rank
Definition | Specifies a preferred order in which to use a set of contacts. ContactPoints with lower rank values are more preferred than those with higher rank values.
Short | Specify preferred order of use (1 = highest)
Comments | Note that rank does not necessarily follow the order in which the contacts are represented in the instance. Ranks need not be unique. E.g. it's possible to have multiple contacts with rank=1. If the ranks have different systems or uses, this would be interpreted to mean "X is my most preferred phone number, Y is my most preferred email address" or "X is my preferred home email and Y is my preferred work email". If the system and use for equally-ranked contacts are the same, then the level of preference is equivalent for both repetitions. Ranks need not be sequential and not all repetitions must have a rank. For example, it's possible to have 4 contacts with ranks of 2, 5 and two with no rank specified. That would be interpreted to mean the first is preferred over the second and no preference stated for the remaining contacts.
Control | 0..1
Type | positiveInt
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
14. ContactPoint.period
Definition | Time period when the contact point was/is in use.
Short | Time period when the contact point was/is in use
Control | 0..1
Type | Period
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)