Incorrect choice or transposition of diagnostic or procedural code numbers.

MEDICAL,USA: Improper performance of a lawful act, especially in a way that may cause damage or injury.
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UK: The improper performance of a lawful act, e.g. repairing a road negligently. Compare with non-feasance.
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The improper performance of an act, as distinct from nonfeasance.

Insured that gives an age that is younger or older than his or her actual age. In life insurance policies, there is a provision specifying that either the policy’s benefit amount or premium amount will be adjusted depending on whether it is an individual or group policy.