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ICD code for Insulin Pump Malfunction

Underdose of insulin due insulin pump failure

An underdose of insulin due to an insulin pump failure should  be assigned 996.57, Mechanical complication due to insulin pump, as the principal or first listed code, followed by the appropriate diabetes mellitus code based on documentation. 

ICD 10 codes: T85.694A Other mechanical complication of insulin pump, initial encounter

Overdose of insulin due to insulin pump failure

The principal or first listed code for an encounter due to an insulin pump malfunction resulting in an overdose of insulin, should also be 996.57, Mechanical complication due to insulin pump, followed by ICD 9 code 962.3, Poisoning by insulins and antidiabetic agents, and the appropriate diabetes mellitus code based on documentation.

ICD 10 codes:

T38.3X1A Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, accidental (unintentional), initial encounter

T38.3X2A Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, intentional self-harm, initial encounter

T38.3X3A Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, assault, initial encounter

T38.3X4A Poisoning by insulin and oral hypoglycemic [antidiabetic] drugs, undetermined, initial encounter

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