This
page
is
part
of
the
FHIR
Specification
(v1.0.2:
DSTU
(v3.0.2:
STU
2).
3).
The
current
version
which
supercedes
this
version
is
5.0.0
.
For
a
full
list
of
available
versions,
see
the
Directory
of
published
versions
.
Page
versions:
R4
R3
R2
R3
R2
These
system
namespaces
are
defined
for
use
in
FHIR
when
representing
codes
that
were
defined
as
part
of
the
HL7
v2
tables
in
FHIR
instances.
So
if
you
are
representing
the
code
"M"
from
table
0001
in
HL7
v2.3.1
in
a
FHIR
instance,
then
you
would
use
the
system
"http://hl7.org/fhir/v2/0001".
There are a number of subtle but serious issues with using tables defined for HL7 v2 as code systems, so some of these tables are mapped to a different namespace for each version. All of these namespaces are subject to further change as additional review of the tables proceeds.