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The CER segment adds detailed information regarding the formal authorizations to provide a service (e.g. licenses, certificates) held by the health professional identified by the STF segment.

HL7 Attribute Table - CER - Certificate Detail Segment

Seq#	DataElement	Description	Must Implement	Flags	Cardinality	Length	C.LEN	Vocabulary	DataType
CER
1	01856	Set ID – CER	SHALL		[1..1]	[1..4]			SI
2	01857	Serial Number		=	[0..1]		80		ST
3	01858	Version		=	[0..1]		80		ST
4	01859	Granting Authority			[0..1]				XON
5	01860	Issuing Authority			[0..1]				XCN
6	01861	Signature			[0..1]				ED
7	01862	Granting Country			[0..1]	[3..3]		0399	ID
8	01863	Granting State/Province			[0..1]			0347	CWE
9	01864	Granting County/Parish			[0..1]			0289	CWE
10	01865	Certificate Type			[0..1]				CWE
11	01866	Certificate Domain			[0..1]				CWE
12	01867	Subject ID	MAY True: False:	C	[1..1] [0..1]				EI
13	01907	Subject Name	SHALL	=	[1..1]		250		ST
14	01868	Subject Directory Attribute Extension			[0..*]				CWE
15	01869	Subject Public Key Info			[0..1]				CWE
16	01870	Authority Key Identifier			[0..1]				CWE
17	01871	Basic Constraint			[0..1]	[1..1]		0136 Yes/no Indicator	ID
18	01872	CRL Distribution Point			[0..*]				CWE
19	01875	Jurisdiction Country			[0..1]	[3..3]		0399	ID
20	01873	Jurisdiction State/Province			[0..1]			0347	CWE
21	01874	Jurisdiction County/Parish			[0..1]			0289	CWE
22	01895	Jurisdiction Breadth			[0..*]			0547 Jurisdictional Breadth	CWE
23	01876	Granting Date			[0..1]				DTM
24	01877	Issuing Date			[0..1]				DTM
25	01878	Activation Date			[0..1]				DTM
26	01879	Inactivation Date			[0..1]				DTM
27	01880	Expiration Date			[0..1]				DTM
28	01881	Renewal Date			[0..1]				DTM
29	01882	Revocation Date			[0..1]				DTM
30	01883	Revocation Reason Code			[0..1]				CWE
31	01884	Certificate Status Code			[0..1]			0536 Certificate Status	CWE

Definition: This field contains the number that identifies this transaction. For the first occurrence of the segment, the sequence number shall be one; for the second occurrence, the sequence number shall be two; etc.

Definition: The serial number uniquely identifies the attribute certificate within the scope of its issuer. This field contains the number and/or characters that identify the certificate held by the health professional.

An attribute certificate is a data structure which certifies (either digitally or manually) that one or more attributes (e.g., descriptors, capabilities, qualifications, etc.) are associated with a particular entity as verified/certified by the attribute authority (e.g., Credentialing Organization (US), Physician Chamber "Ärztekammer" (D), Physicians Statutory Association "Kassenärztliche Vereinigung" (D)).

Definition: The version number differentiates among different versions of the attribute certificate.

Definition: It specifies the authority that granted the certificate to the person.

Definition: Specifies the authority that issued the certificate to the person.

(Definition from CER.6 in Ch. 15)

Definition: Digital Signature of the certifying authority. The Digital Signature includes a seal concept and is verifiable.

(Definition from STF.41 in Ch. 15)

Definition: Digital Signature of the staff member. The Digital Signature includes a seal concept and is verifiable.

Definition: ID of the country granting the certificate. Refer to External Table 0399 – Country Code for valid values.

Definition: State/province granting the certificate. Refer to User-defined Table 0347 – State/Province for valid values (in Chapter 2)

Definition: County/parish granting the certificate. Refer to User-defined Table 0289 – County/Parish for valid values (in Chapter 2).

Definition: This field specifies the certificate's classification, e.g., being a privilege, permission, or qualification certificate.

Definition: This field specifies the subject area to which the certificate is applicable, e.g., administrative, medical, or nursing issues.

Definition: This field expresses the identifier of the certificate's subject as used by the certifying body. (The subject is the owner of the certificate, e.g., person, organization, device, application, component.) If the certificate is expressed as a X.509 document this field is required.

Definition: This field defines the name of the subject of the certificate as used by the certifying body.

Definition: In individual identity certificates, this Subject Directory Attribute extension MAY contain a Healthcare Professional Role attribute and may contain a Qualified Certificate Statement attribute. In addition, Subject Directory Attributes MAY contain other attributes not specified by this technical specification.

Definition: This field contains the algorithm identifier. Referred to this field, the X.509 extension field MAY contain a Subject Public Key Identifier to identify the public key used in the Subject Public Key Info.

X.509 is an ISO standard specifying certificates.

Definition: The Authority Key Identifier extension SHALL identify the public key to be used to verify the signature of the certificate. It enables distinct keys, used by one CA, to be distinguished (e.g., as key updating occurs).

Definition: The Basic Constraints extension contains a boolean used to specify whether or not the subject can act as a CA (certificate authority), using the certified key to sign certificates.

Definition: The Certificate Revocation List (CRL) Distribution Point extension SHALL identify the location of the associated CRL (or Authority Revocation List (ARL) for attribute certificates) in the PKI directory.

Definition: This field contains the country for which the qualification is valid. Refer to External Table 0399 – Country Code for valid values.

Definition: This field contains the state for which the qualification is valid. HL7 suggests using values in User-defined Table 0347 – State/Province.

Definition: This field contains the county/parish for which the qualification is valid. HL7 suggests using values in User-defined Table 0289 – County/Parish.

Definition: This field contains the breadth/extent of the jurisdiction where the qualification is valid. HL7 suggests using values in User-defined Table 0547 – Jurisdictional Breadth.

Refer to User-defined Table 0547 – Jurisdictional Breadth in Chapter 2C, Code Tables, for valid values. This table contains values for County, Parish, County etc.

Definition: This field contains the date when the certificate was granted.

Definition: This field contains the date/time when the certificate was issued.

Definition: This field contains the date/time when the certificate became or will become active.

Definition: This field contains the date/time when the certificate became or will become inactive.

Definition: This field contains the date/time when the certificate expires or will expire.

Definition: This field contains the date/time when the certificate must/will/ be / has been renewed.

Definition: This field contains the date/time when the certificate has been revoked.

Definition: This field contains the reason for revoking the certificate (e.g., having been compromised, changes of conditions/environment, etc.)

Definition: This field contains the state of the certificate held by the health professional, such as provisional, revoked, etc. Refer to User-defined Table 0536 – Certificate Status in Chapter 2C, Code Tables, for suggested values.