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Identification of Specific Variables: Part 1
Faith Asper, MHS
Director, ResDAC Assistance Desk
Objectives
Review the structure of the variables in the raw
data
Identify the resource document needed to
determine which data file a variable will be found
Review the coding scheme used to identify
variables
2
Review the Raw Data
What is included with the ALPHA file versus the
NMRC file?
Alphanumeric File
3
HCRIS Data Model
4
Hospital [1996 or 2010]_Documentation: HCRIS Data Model.pdf
ALPHA File Contents
The Alphanumeric file contains one record for
each cost report variable.
File contains only alphanumeric variable types
Some of the data elements found in this file
include:
˗ Hospital Name
˗ Provider number
˗ Yes/No variables
5
What resource identifies a variable as ALPHA or NMRC?
6
Resource Needed to Determine Variable Type
“Specifications” document (PRM 15-2) contains
the “Record Specifications” which will identify if
the variable is an alpha or numeric
˗ “R3P240S.pdf”, Table 3 (2010 Hospitals)
˗ “R25p236s.zip”, 96SPECS.xls, Table 3 (1996 Hospitals)
7
CMS Cost Report Section http://www.cms.gov/Research-Statistics-Data-and-Systems/Files-for-Order/CostReports/Hospital-2010-form.html
8
Specifications
This document includes several useful tables that
are used in identifications of variables and coding
schemes.
This is always included with the Provider
Reimbursement Manual 15-2
Some cost report downloads will include the list of
data elements in the “documentation” zipped file
on the provider’s cost report page
9
Specifications: Table 3
10
“X” = Alphanumeric value
Field size gives the maximum variable
width
Specifications: Table 3
Identifies the variables contained within the
download
Identifies the line number and column numbers
where the variable is found
Identifies the variable type (called “Usage”) as
either alphanumeric or numeric
Alphanumeric variables are identified with an “X”
Numeric variables are identified with a “9”
11
NMRC File
How can I tell if a variable can take a negative
value?
12
NMRC File Contents
The Numeric file contains one record for each cost
report variable.
File contains only Numeric variable types
Some of the data elements found in this file
include:
˗ Number of beds
˗ Number of discharges
˗ Net income
13
Specifications: Table 3
14
“9” indicates a number
Usage Definitions
From the Introduction of Table 3
Table 3 ‘Usage’ column is used to specify the
format of each data item as follows:
15
Value Definition
9 Numeric, greater than or equal to zero
-9 Numeric, may be either grater than or less than zero
9(x).9(y) Numeric, greater than zero, with x or fewer significant
digits to the left of the decimal point, a decimal point,
and exactly y digits to the right of the decimal point.
X Character
Identification of a Variable
16
Components to Identify a Variable
Worksheet Code
Line Code
Column Code
All three pieces are necessary to identify a specific
variable.
17
Resources Needed
1. Cost Report Forms
˗ Found in Provider Reimbursement Manual (PRM), Part 2
˗ Found under the provider cost report page, “Related downloads”
˗ Zipped file within the download is labeled with an “F” at the end of the name. For 2010 Hospital cost reports is is “R3P240F.zip”
2. Worksheet Code Table
˗ File contained within the “Documentation” download
˗ Can also find this within the “Specifications” download in the PRM, Part 2
18
Resources Needed
3. HCRIS Data Model
˗ File will show the length of the variables
˗ File will show the variable type
19
Cost Report Form
Hospital Name
˗ Worksheet S-2 Part 1, Line 3, Column 1
20
ALPHA File
How do you find Hospital Name from the raw
data?
21
Worksheet Code Table
The Worksheet code table provides the list of all
worksheet codes used in the cost report data
22
HCRIS Data Model
Worksheet code
˗ Length of 7
˗ Character value
Line number
˗ Length of 5
˗ Character value
Column number
˗ Length of 4 (1996)
˗ Length of 5 (2010)
˗ Character value
23
Line Codes
Line codes have a length of 5
First 3 positions indicate the line
˗ Example: Line 1 = 00100
Last 2 positions indicate a subline
˗ Example: Line 1.01 = 00101
˗ Sublines occur when a variable is added to the form in
between two existing lines.
24
Column Codes
Column codes have a length of 4 for the 1996 forms and a length of 5 for the 2010 forms
First 2 (1996) positions indicate the column
˗ Example: Column 1 = 0100
˗ First 3 (2010) positions indicate the column
˗ Example: Column 1 = 00100
Last 2 positions indicate a subcolumn
˗ Example for 1996 forms: Column 1.01 = 0101
˗ Example for 2010 forms: Column 1.01 = 00101
˗ Subcolumns occur when a variable is added to the form in between two existing lines.
25
Cost Report Form
Hospital Name
˗ Worksheet S-2 Part 1, Line 3, Column 1
26
Hospital Name
Worksheet Code = S20001
Line Code = 00300
Column Code = 00100 (2010 form)
All three pieces are necessary to identify a specific
variable.
27
Crosswalk Between New and Old Forms
Crosswalk identifies equivilent variables between
1996 and 2010 forms.
28
Special Unit Coding for 1996 forms
Note that for the 1996 forms, CMS codes certain
special units using cost center numbers versus
using the line number.
Refer to Documentation, Readme.txt for
information.
Intensive Care Unit:
˗ Do NOT use the line 6 code 00600
˗ Use the Cost center code range 02600-02619
29
Summary
Use the Specifications file, Table 3 to determine if
a variable is in the ALPH or NMRC file.
Three variables identify a single variable:
˗ Worksheet code
˗ Line code
˗ Column code
30