Underdosing of mixed bacterial vaccines w/o a pertuss, init

This code signifies a situation where a patient has received less than the prescribed or recommended amount of a bacterial vaccine that does not include a pertussis component. This underdosing could lead to inadequate immunity against the targeted bacterial infections. It specifically indicates the initial presentation or treatment for this underdosing event.

Use this code when documenting the first encounter for a patient who has received an insufficient dose of a multi-component bacterial vaccine, excluding those containing pertussis. This might occur if a partial dose was administered, or if a scheduled dose was missed or delayed beyond the recommended interval, and the patient is now presenting for evaluation or correction.

• Always assign an additional code for the specific adverse effect or reason for underdosing, if known.
• Ensure the documentation clearly states this is the initial encounter for the underdosing event.
• Distinguish carefully from underdosing of single bacterial vaccines or vaccines containing a pertussis component.