This
page
is
part
of
the
FHIR
Specification
(v4.3.0:
R4B
(v5.0.0:
R5
-
STU
).
The
This
is
the
current
published
version
which
supercedes
in
it's
permanent
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(it
will
always
be
available
at
this
version
is
5.0.0
.
URL).
For
a
full
list
of
available
versions,
see
the
Directory
of
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.
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R4B
R5
R4B
R4
R3
R2
Health
Level
Seven
(HL7)
has
been
developing
healthcare
information
exchange
and
related
standards
since
1987.
In
that
time,
the
organization
has
produced
a
number
of
standards
families
-
many
used
throughout
the
world
to
automate
healthcare
data
sharing
and
improve
patient
care.
FHIR
has
been
written
to
be
implementable
without
any
knowledge
of
these
other
specifications.
However,
FHIR
does
leverage
this
prior
experience,
both
in
terms
of
applying
best
practices
learned
from
experience
and
attempting
to
avoid
some
of
the
pitfalls
of
earlier
work.
This
appendix
describes
the
relationship
of
FHIR
to
some
of
HL7's
other
standard
families.
It
may
be
of
interest
to
those
coming
to
FHIR
with
previous
experience
with
other
HL7
standards
as
well
as
those
who
may
need
to
support
interoperability
between
FHIR
solutions
and
implementations
of
other
HL7
standards.
In
addition
to
the
major
standards
families
identified
below,
HL7
produces
numerous
implementation
guides,
some
of
which
have
earned
as
much
prominence
as
a
standard
family
themselves.
The
general
guidance
given
below
for
each
standard
family
should
hold
for
all
implementation
guides
based
on
that
standard.
For
example,
the
guidance
listed
for
CDA
would
apply
to
Consolidated
CDA
(CCDA)
and
other
CDA
Implementation
Guides.
While
this
appendix
focuses
on
the
relationship
between
FHIR
and
other
HL7
standards,
relationships
also
exist
to
non-HL7
standards.
Some
resources
provide
direct
implementation
of
functionality
from
other
standards
including
DICOM
(see
the
ImagingStudy
resource)
and
IHE
(e.g.
the
AuditEvent
and
DocumentReference
resources).
Many
FHIR
resources
draw
requirements
from
or
provide
mappings
to
other
standards.
Some
resources
also
provide
additional
guidance
on
how
to
use
them
with
external
specifications
as
part
of
their
implementation
notes.
As
well,
there
are
chat.fhir.org
streams
exist
dealing
with
CDA
and
FHIR
and
v2
and
FHIR
.
You
can
check
the
stream
list
or
ask
on
the
implementer's
stream
for
guidance
about
FHIR
and
other
specifications
FHIR
can
satisfy
the
needs
covered
by
all
of
the
previous
primary
HL7
interoperability
standards
(
HL7
v2
V2
,
HL7
v3
and
CDA).
In
many
cases,
it
also
provides
additional
benefits
in
terms
of
ease
of
interoperability.
Therefore,
the
possibility
exists
that
FHIR
could
gradually
replace
some
or
all
of
these
standards.
However,
it
is
unclear
how
rapidly
(or
even
if)
the
market
will
make
such
a
migration.
It
is
likely
that
most
of
these
standards
will
exist
in
parallel
for
quite
some
time.
HL7
has
committed
to
ongoing
maintenance
of
existing
standards
for
as
long
as
the
HL7
membership
requires.