Updates to the ICD-9-CM codes are effective annually in which month?

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Multiple Choice

Updates to the ICD-9-CM codes are effective annually in which month?

Explanation:
The updates to ICD-9-CM codes are implemented each year starting in October. Each fall, the code set is revised with new, modified, or retired codes, and the changes take effect on October 1. This date is tied to the start of the federal fiscal year, so coding and billing systems switch to the latest version at that time. In practice, services with dates of care on or after October 1 should use the updated codes.

The updates to ICD-9-CM codes are implemented each year starting in October. Each fall, the code set is revised with new, modified, or retired codes, and the changes take effect on October 1. This date is tied to the start of the federal fiscal year, so coding and billing systems switch to the latest version at that time. In practice, services with dates of care on or after October 1 should use the updated codes.

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