Underdosing of antipruritics, sequela

This code indicates a patient experienced a long-term or residual effect due to not receiving enough antipruritic medication. This underdosing event occurred in the past and is now causing a current health problem or complication. The sequela could be persistent itching, skin damage from scratching, or secondary infections.

Use this code when documenting a current condition that is a direct consequence of a past underdosing of an antipruritic. This applies when the original underdosing event is no longer active but its effects are still being managed. For example, a patient presents with chronic excoriations and lichenification attributed to insufficient antipruritic treatment months ago.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic pruritus, dermatitis).
• Ensure documentation clearly links the current condition to a past underdosing of an antipruritic.
• Do not use this code for acute underdosing events that are currently being treated; use the acute underdosing code for those scenarios.