FHIR
Release
3
(STU)
CI-Build
Terminology
This
page
is
part
of
the
FHIR
Specification
(v3.0.2:
STU
3).
The
current
version
which
supercedes
this
version
is
5.0.0
.
For
a
full
list
Continuous
Integration
Build
of
available
versions,
see
FHIR
(will
be
incorrect/inconsistent
at
times).
See
the
Directory
of
published
versions
.
Page
versions:
R5
R4B
R4
R3
|
Work
Group
|
Informative |
Use
Context
:
|
Official
URL
:
http://hl7.org/fhir/observation-statistics
|
Version : 6.0.0-ballot3 | |||
| active as of 2022-11-30 |
|
|||
|
|
OID : 2.16.840.1.113883.4.642.1.1126 | |||
This Code system is used in the following FHIR core-defined or referenced value sets:
The statistical operation parameter -"statistic" codes.
Generated Narrative: CodeSystem observation-statistics
Last updated: 2025-12-17T09:50:17.012Z
This
case-sensitive
code
system
http://hl7.org/fhir/observation-statistics
defines
the
following
codes:
| Code | Display | Definition | Copy |
| average | Average |
The
|
 |
| maximum | Maximum |
The
|
|
| minimum | Minimum |
The
|
|
| count | Count |
The
[number]
of
valid
measurements
over
the
stated
period
that
contributed
to
the
other
statistical
|
|
| total-count | Total Count |
The
total
[number]
of
valid
measurements
over
the
stated
period,
including
observations
that
were
ignored
because
they
did
not
contain
valid
result
|
|
| median | Median |
The
|
|
| std-dev | Standard Deviation |
The
|
|
| sum | Sum |
The
|
|
| variance | Variance |
The
|
|
| 20-percent | 20th Percentile |
The
20th
|
|
| 80-percent | 80th Percentile |
The
80th
|
|
| 4-lower | Lower Quartile |
The
lower
|
|
| 4-upper | Upper Quartile |
The
upper
|
|
| 4-dev | Quartile Deviation |
The
difference
between
the
upper
and
lower
|
|
| 5-1 | 1st Quintile |
The
lowest
of
four
values
that
divide
the
N
measurements
into
a
frequency
distribution
of
five
classes
with
each
containing
one
fifth
of
the
total
|
|
| 5-2 | 2nd Quintile |
The
second
of
four
values
that
divide
the
N
measurements
into
a
frequency
distribution
of
five
classes
with
each
containing
one
fifth
of
the
total
|
|
| 5-3 | 3rd Quintile |
The
third
of
four
values
that
divide
the
N
measurements
into
a
frequency
distribution
of
five
classes
with
each
containing
one
fifth
of
the
total
|
|
| 5-4 | 4th Quintile |
The
fourth
of
four
values
that
divide
the
N
measurements
into
a
frequency
distribution
of
five
classes
with
each
containing
one
fifth
of
the
total
|
|
| skew | Skew |
Skewness
is
a
measure
of
the
asymmetry
of
the
probability
distribution
of
a
real-valued
random
variable
about
its
mean.
The
skewness
value
can
be
positive
or
negative,
or
even
undefined.
Source:
|
|
| kurtosis | Kurtosis |
Kurtosis
is
a
measure
of
the
|
|
| regression | Regression |
Linear
regression
is
an
approach
for
modeling
two-dimensional
sample
points
with
one
independent
variable
and
one
dependent
variable
(conventionally,
the
x
and
y
coordinates
in
a
Cartesian
coordinate
system)
and
finds
a
linear
function
(a
non-vertical
straight
line)
that,
as
accurately
as
possible,
predicts
the
dependent
variable
values
as
a
function
of
the
independent
variables.
Source:
|
|
See
the
full
registry
of
value
sets
code
systems
defined
as
part
of
FHIR.
Explanation of the columns that may appear on this page:
| Level |
A
few
code
lists
that
FHIR
defines
are
hierarchical
-
each
code
is
assigned
a
level.
|
| Source | The source of the definition of the code (when the value set draws in codes defined elsewhere) |
| Code | The code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract') |
| Display | The display (used in the display element of a Coding ). If there is no display, implementers should not simply display the code, but map the concept into their application |
| Definition | An explanation of the meaning of the concept |
| Comments | Additional notes about how to use the code |
FHIR
®©
HL7.org
2011+.
FHIR
Release
3
(STU;
v3.0.2-11200)
R6
hl7.fhir.core#6.0.0-ballot3
generated
on
Thurs,
Oct
24,
2019
11:53+1100.
QA
Page
Wed,
Dec
17,
2025
09:51+0000.
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