Way To Import Data From CSV Or Excel Spreadsheet

I am looking for a way to import data from a CSV or Excel spread sheet and add the data directly into an Extended field instead of a regular field in the table. for example: let's say I have a comma delimited field with the following info:

NDC_M_FORMULARY,CUSTOM_EXTSIG,Custom EXT SIG
NDC_M_FORMULARY,DRUG_CODE,Alternate key, user defined
NDC_M_FORMULARY,CHARGE_CODE,From the Charge code table

The first column is the table name
Second Column is the Column name in the table
The third column contains the description that I would like to store in the Value in the Extended Property Name "MS_Description"

BTW,I did find the following T-SQL which returns the Extended description for a specific Extended Property

Here it is:

SELECT
[Table Name] = i_s.TABLE_NAME,
[Column Name] = i_s.COLUMN_NAME,
[Description] = s.value
FROM
INFORMATION_SCHEMA.COLUMNS i_s
LEFT OUTER JOIN

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