Is there a cut off time period when using “history of” ICD-9-CM codes?
The code classification for “history of” does not define a time limit. History codes may be used as secondary codes if the historical condition or family history has an impact on current care or influences treatment. Please note that physicians sometimes include in the diagnostic statement historical information or status post procedure from a previous admission. These have no bearing on the current stay, and such conditions are not reported.
