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Table of Contents
Release

Author(s)

Change Description

Date

1.0 First Published Draft Version

2008-Mar-03

1.1

Lorie Carey

Changes based on draft feedback

2008-Jul-02

1.2

Lorie Carey

Changes resulting from PRM White Paper

2008-Oct-06

02.03.00

Lorie Carey

Updated to include processes to support French translations

2009-Apr-14

04.00.00

Lorie Carey

Update and revise document

2012-July-23

04.01.00

Lorie Carey

Published version

2012-July-31

04.01.01

Lorie Carey

URL edits

2012-Aug-20

04.02.00

Lorie Carey

Changes to reflect new RFC processes

2014-Jan-29

05.00.00

Lorie Carey

Changes to reflect new pCLOCD Terms of Use, added hyperlink to new LOINC codes

2014-Jul-29

05.01.00

Lorie Carey

Updated

2015-Jan-28

05.07.00

Linda Monico

Updated

2017-July-28

05.12.00

Linda Monico

Updated

2020-Jul

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Instructions

Example Using the number: 12345

1)    Assign positions to the digits, from right to left

1st = 5

2nd = 4

3rd = 3

4th = 2

5th = 1

2)    Take the odd digit positions counting from the right (1st, 3rd, 5th, etc.)

531

3)    Multiply by 2

1062

4)    Take the even digit positions starting from the right (2nd, 4th, etc.)

42

5)    Append (4) to the front of the results of (3)

421062

6)    Add the digits of (5) together

4+2+1+0+6+2 = 15

7)    Find the next highest multiple of 10

20

8)    Subtract (6) from (7)

20 - 15 = 5

Thus, 5 is the Mod 10 check digit for 12345

12345-5

Table 2 Mod-10 Algorithm

 

 

Table of Contents