0299

Encoding

Introduced in v2.3· user· universal· 3 values

THO:Encodingv2.0.0

HL7-defined code system of concept 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. Used in HL7 Version 2.x messaging in the ED datatypes.

OID & Vocabulary Information

THO Canonical URL (v2.0.0)
http://terminology.hl7.org/CodeSystem/v2-0299
Table OID
2.16.840.1.113883.12.299
Codesystem OID (v1)
2.16.840.1.113883.18.185
Value Set OID
2.16.840.1.113883.21.197
Binding
universal
Expansion
All codes from codesystem
UTG Code Table
new cs
3
A
no encoding - data are displayable ASCII characters.
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 lower case alphabetic characters, digits "0" through “9,” “+,” “/,” and “=.”.)
THO: The Request For Comment (RFC) 1521 standard is available at: http://www.ietf.org/rfc/rfc1521.txt
Definition: 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 “=”.
Hex
hexadecimal encoding - consecutive pairs of hexadecimal digits represent consecutive single octets.
3 codes