Undrdose of mixed bacterial vaccines w/o a pertuss, sequela

This code signifies a long-term health problem or condition that arose as a direct consequence of a patient not receiving an adequate dose of a bacterial vaccine that specifically excludes a pertussis component. This could involve vaccines for diseases like tetanus, diphtheria, or certain types of meningitis, where the underdosing led to a subsequent health issue.

Use this code when a patient presents with a current medical condition (the sequela) that is definitively linked to a past instance of underdosing of a mixed bacterial vaccine without a pertussis component. This typically applies when the original underdosing event is no longer an active problem, but its lasting effects are being treated. Examples include chronic infections or complications that developed due to insufficient immunization.

• Always code the specific sequela (the resulting condition) first, followed by this underdosing code.
• Ensure documentation clearly establishes a causal link between the underdosing and the current sequela.
• This code is for the sequela of underdosing, not for the acute underdosing event itself.