icd9.hlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{smcl}
{* 24nov2004}{...}
{cmd: help icd9}, {cmd:help icd9p}{...}
{right:dialogs:  {dialog icd9check:check}  {dialog icd9clean:clean}  {dialog icd9generate:generate}}
{right:{dialog icd9lookup:lookup}  {dialog icd9search:search}  {dialog icd9query:query} }
{hline}

{title:Title}

{p2colset 5 17 19 2}{...}
{p2col :{hi:[D] icd9} {hline 2}}ICD-9-CM diagnostic and procedure codes{p_end}
{p2colreset}{...}


{title:Syntax}

{phang}
Verify that variable is valid

{p 8 16 2}
{c -(}{cmd:icd9}|{cmd:icd9p}{c )-}
{cmd:check} {varname}
[{cmd:,}
{opt any}
{opt l:ist}
{opth g:enerate(newvar)}]

{phang}
Clean and verify variable

{p 8 16 2}
{c -(}{cmd:icd9}|{cmd:icd9p}{c )-}
{opt clean} {varname}
[{cmd:,}
{opt d:ots}
{opt p:ad}]

{phang}
Generate new variable from existing variable

{p 8 16 2}
{c -(}{cmd:icd9}|{cmd:icd9p}{c )-}
{opt gen:erate} {newvar} {cmd:=} {varname}{cmd:,}
{opt m:ain}

{p 8 16 2}
{c -(}{cmd:icd9}|{cmd:icd9p}{c )-}
{opt gen:erate} {newvar} {cmd:=} {varname}{cmd:,}
{opt d:escription}
[{opt l:ong} {opt e:nd}]

{p 8 16 2}
{c -(}{cmd:icd9}|{cmd:icd9p}{c )-}
{opt gen:erate} {newvar} {cmd:=} {varname}{cmd:,}
{opt r:ange(icd9rangelist)}

{phang}
Display code descriptions

{p 8 16 2}
{c -(}{cmd:icd9}|{cmd:icd9p}{c )-}
{opt l:ookup} {it:icd9rangelist}

{phang}
Search for codes from descriptions

{p 8 16 2}
{c -(}{cmd:icd9}|{cmd:icd9p}{c )-}
{opt sea:rch}
[{cmd:"}]{it:text}[{cmd:"}]
[[{cmd:"}]{it:text}[{cmd:"}] {it:...}]
[{cmd:,}
{opt or}]

{phang}
Display ICD-9 code source

{p 8 16 2}
{c -(}{cmd:icd9}|{cmd:icd9p}{c )-}
{opt q:uery}

{pstd}
where {it:icd9rangelist} is

{p2colset 9 30 32 2}{...}
{p2col :{it:icd9code}}(the particular code){p_end}
{p2col :{it:icd9code}{cmd:*}}(all codes starting with){p_end}
{p2col :{it:icd9code}{cmd:/}{it:icd9code}}(the code range){p_end}
{p2colreset}{...}

{pstd}
or any combination of the above, such as {cmd:001* 018/019 E* 018.02}.
Note that {it:icd9codes} must be typed with leading zeros:  {cmd:1} is an
error; type {cmd:001} (diagnostic code) or {cmd:01} (procedure code).

{p 4 6 2}
{opt icd9} is for use with ICD-9 diagnostic codes, and {opt icd9p} for use with
procedure codes.  The two commands' syntax exactly parallel each other.


{title:Description}

{pstd}
{opt icd9} and {opt icd9p} assist with working with ICD-9-CM codes.

{pstd}
ICD-9 codes come in two forms:  diagnostic codes and procedure codes.  001
(cholera) and 941.45 (deep 3rd deg burn nose) are examples of diagnostic
codes, although some people write (and datasets record) 94145 rather than
941.45.  01 (incise-excis brain/skill) and 55.01 (nephrotomy) are examples
of procedure codes, although some people write 5501 rather than 55.01.
{opt icd9} and {opt icd9p} understand both ways of recording codes.

{pstd}
{opt icd9} and {opt icd9p} parallel each other; {opt icd9} is
for use with diagnostic codes, and {opt icd9p} for use with procedure codes.

{pstd}
{opt icd9}[{opt p}]
{opt check} verifies that existing variable {varname} contains valid
ICD-9 codes.  If not, {opt icd9}[{opt p}] {opt check} provides a full
report on the problems.
{opt icd9}[{opt p}] {opt check} is useful for tracking down problems when any
of the other {opt icd9}[{opt p}] commands tell you that the 
"variable does not contain
ICD-9 codes".  {opt icd9}[{opt p}] {opt check} 
verifies that each of the recorded codes actually exists in the
official list.

{pstd}
{opt icd9}[{opt p}]
{opt clean} also verifies that existing variable {it:varname} contains
valid ICD-9 codes and, if it does, {opt icd9}[{opt p}] {opt clean} modifies
the variable to contain the codes in either of two standard formats.
All {opt icd9}[{opt p}] commands
work equally well with cleaned or uncleaned codes.  There are numerous ways of
writing the same ICD-9 code and {opt icd9}[{opt p}] {opt clean} is designed
(1) to ensure consistency, and (2) to make subsequent output look better.

{pstd}
{opt icd9}[{opt p}]
{opt generate}
produces new variables based on existing variables containing
(cleaned or uncleaned) ICD-9 codes.
{opt icd9}[{opt p}] {opt generate,} {opt main}
produces {newvar} containing the main code.
{opt icd9}[{opt p}] {opt generate,} {opt description}
produces {it:newvar} containing a textual description of the ICD-9 code.
{opt icd9}[{opt p}] {opt generate,} {opt range()}
produces numeric {it:newvar} containing 1 if {it:varname} records an ICD-9
code in the range listed, and 0 otherwise.

{pstd}
{opt icd9}[{opt p}]
{opt lookup}
and {opt icd9}[{opt p}] {opt search}
are utility routines that are useful interactively.
{opt icd9}[{opt p}] {opt lookup} simply displays descriptions of the codes
specified on the command line, so to find out what
diagnostic E913.1 means, you can type {cmd:icd9 lookup e913.1}.  The
data you have in memory are irrelevant{hline 2}and remain
unchanged{hline 2}when you use
{opt icd9}[{opt p}] {opt lookup}.
{opt icd9}[{opt p}] {opt search} is similar to
{opt icd9}[{opt p}] {opt lookup}, except that it turns the problem around;
{opt icd9}[{opt p}] {opt search} looks for relevant ICD-9 codes from the
description given on the command line.  For instance, you could type
{cmd:icd9 search liver} or {cmd:icd9p search liver} to obtain a list of
codes containing the word "liver".

{pstd}
{opt icd9}[{opt p}]
{opt query}
displays the identity of the source from which the ICD-9 codes
were obtained and the textual description that {opt icd9}[{opt p}] uses.

{pstd}
Note that ICD-9 codes are commonly written two ways, with and without periods.
For instance, with diagnostic codes, you can write 001, 86221, E8008, and
V822, or you can write 001., 862.21, E800.8, and V82.2.  With procedure codes,
you can write 01, 50, 502, and 5021, or 01., 50., 50.2, and 50.21.  The
{opt icd9}[{opt p}] command does not care which syntax you use or even whether
you are consistent.  Case also is irrelevant:  v822, v82.2, V822, and V82.2
are all equivalent.  Codes may be recorded with or without leading and
trailing blanks.

{pstd}
{opt icd9}[{opt p}] works with V19, V18, and V16 codes.


{title:Options for icd9[p] check}

{phang}
{opt any} tells {opt icd9}[{opt p}] {opt check} to verify that the codes
fit the format of ICD-9 codes but not to check whether the codes are
actually valid.  This makes {opt icd9}[{opt p}] {opt check} run faster.  For
instance, diagnostic code 230.52 (or 23052, if you prefer) looks valid,
but there is no such ICD-9 code.  Without the {opt any} option, 230.52
(or 23052) would be flagged as an error.  With {opt any}, 230.52 (or 23052)
is not an error.

{phang}
{opt list} reports any invalid codes that were found in the data 
by {opt icd9}[{opt p}] {opt check}.
For example, 1, 1.1.1, and perhaps 230.52 if {opt any} is not
specified, are to be individually listed.

{phang}
{opth generate(newvar)} specifies that {opt icd9}[{opt p}]
{opt check} creates new variable {it:newvar} containing, for each
observation, 0 if the code is valid and a number from 1 to 10, otherwise.  The
positive numbers indicate the kind of problem and correspond to the listing
produced by {opt icd9}[{opt p}] {opt check}.  For instance, 10 means the code
could be valid, but it turns out not to be on the official list.


{title:Options for icd9[p] clean}

{phang}
{opt dots} specifies whether periods are to be included in the final format.
Do you want the diagnostic codes recorded, for instance, as 86221 or 862.21?
Without the {cmd:dots} option, the 86221 format would be used.
With the {opt dots} option, the 862.21 format would be used.

{phang}
{opt pad} specifies that the codes are to be padded with spaces, front
and back, to make the codes line up vertically in listings.  Specifying
{opt pad} makes the resulting codes look better when used with most other
Stata commands.


{title:Options for icd9[p] generate}

{phang}
{opt main}, {opt description}, and {opt range(icd9rangelist)}
specify what {opt icd9}[{opt p}] {opt generate} is to calculate.  In all
cases, {varname} specifies a variable containing ICD-9 codes.

{phang}
{opt main} specifies that the main code is to be extracted from the
ICD-9 code.  For procedure codes, the main code is the first two characters.
For diagnostic codes, the main code is usually the first three or four
characters (the characters before the dot if the code has dots).  In any case,
{opt icd9}[{opt p}] {opt generate} does not care whether the code is padded
with blanks in front or how strangely it might be written; {opt icd9}[{opt p}]
{opt generate} will find the main code and extract it.  The resulting variable
is itself an ICD-9 code and may be used with the other {opt icd9}[{opt p}]
subcommands.  This includes {opt icd9}[{opt p}] {opt generate, main}.

{phang}
{opt description} creates {newvar} containing descriptions of the
ICD-9 codes.

{pmore}
{opt long} is for use with description.  It specifies that the new
variable, in addition to containing the text describing the code,
contain the code, too.  Without {opt long}, {it:newvar} in an observation
might contain "bronchus injury-closed".  With {opt long}, it would contain
"862.21 bronchus injury-closed".

{pmore}
{opt end} modifies {opt long} (specifying {opt end} implies {opt long})
and places the code at the end of the string:  "bronchus injury-closed
862.21".

{phang}
{opt range(icd9rangelist)} allows you to create indicator variables
equal to 1 when the ICD-9 code is in the inclusive range specified.


{title:Option for icd9[p] search}

{phang}
{opt or} specifies that ICD-9 codes be searched for entries
that contain any of the words specified after {opt icd9}[{opt p}]
{opt search}.  The default is to list only entries that contain all the words
specified.


{title:Examples}

{phang}{cmd:. icd9 lookup 526.4}{p_end}
{phang}{cmd:. icd9 lookup 526/527}{p_end}
{phang}{cmd:. icd9 search jaw disease}{p_end}

{phang}{cmd:. icd9 check diag1}{p_end}
{phang}{cmd:. icd9 check diag1, gen(prob)}

{phang}{cmd:. icd9 clean diag1}{p_end}
{phang}{cmd:. icd9 clean diag1, dots}{p_end}

{phang}{cmd:. icd9p clean proc1, dots}{p_end}
{phang}{cmd:. icd9p check proc1}{p_end}

{phang}{cmd:. icd9 gen td1 = diag1, desc}{p_end}

{phang}{cmd:. icd9p gen tp2 = proc2, desc}{p_end}

{phang}{cmd:. icd9 gen main1 = diag1, main}{p_end}


{title:Also see}

{psee}
Manual:  {hi:[D] icd9}
{p_end}