Vocabulary Type | Code System - Universal |
Concept Domain | Encoding |
Code System Name | |
Code System Identifier | |
Code System OID | |
HL7 Table Identifier | HL70299 |
Version | |
Status | Active |
Where Used | |
Purpose and Use | HL7-defined table of codes identifying the type of encoding used to represent successive octets of binary data as displayable ASCII characters. These are defined by IETF; more information may be found at https://www.ietf.org/rfc/rfc1521.txt |
Code | Display | Definition | Deprecated |
---|---|---|---|
A | No encoding - data are displayable ASCII characters. | No encoding - data are displayable ASCII characters. | |
Hex | Hexadecimal encoding - consecutive pairs of hexadecimal digits represent consecutive single octets. | Hexadecimal encoding - consecutive pairs of hexadecimal digits represent consecutive single octets. | |
Base64 | Encoding as defined by MIME (Multipurpose Internet Mail Extensions) standard RFC 1521. Four consecutive ASCII characters represent three consecutive octets of binary data. Base64 utilizes a 65-character subset of US-ASCII, consisting of both the upper and | Encoding as defined by MIME (Multipurpose Internet Mail Extensions) standard RFC 1521. Four consecutive ASCII characters represent three consecutive octets of binary data. Base64 utilizes a 65-character subset of US-ASCII, consisting of both the upper and lower case alphabetic characters, digits “0” through “9”, “+”, “/”, and “=”. |