Underdosing of unsp fibrinolysis-affecting drugs, init

This code signifies a patient experiencing adverse effects or complications due to receiving an insufficient amount of an unspecified medication intended to affect fibrinolysis. This underdosing could lead to the recurrence or worsening of conditions that the fibrinolysis-affecting drug was meant to prevent or treat, such as thrombotic events.

Use this code when documentation clearly indicates that a patient's current condition or symptoms are a direct result of not receiving enough of a fibrinolysis-affecting drug, and the specific drug is not identified. This applies to the initial phase of treatment for the underdosing event. Examples include a patient developing a new clot because their anticoagulant dose was too low, or a patient's existing clot not resolving due to insufficient thrombolytic administration.

• Ensure the documentation explicitly states "underdosing" and links it to the patient's current clinical presentation.
• Only use this code when the specific fibrinolysis-affecting drug is not documented or is unknown. If known, a more specific code from the T45.6 category should be used.
• Remember the "A" seventh character denotes an initial encounter for the underdosing event.