Underdosing of cephalospor/oth beta-lactm antibiot, sequela

This code indicates a patient is experiencing a residual condition or complication that arose from a past instance of not receiving enough cephalosporin or other beta-lactam antibiotic medication. This means the underdosing event itself is no longer active, but its long-term effects are still present and being treated.

Use this code when documenting a chronic infection, organ damage, or other persistent health issue directly attributable to a previous, insufficient course of these antibiotics. This applies when the underdosing event is no longer ongoing, but its sequelae are the focus of the current encounter.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Do not use this code for acute underdosing events; those require a different 7th character.
• Ensure documentation clearly links the current condition to the prior underdosing of cephalosporins or other beta-lactams.