Underdosing of hemostatic drugs, initial encounter

This diagnosis code indicates that a patient has received an insufficient amount of medication intended to promote blood clotting or stop bleeding. This underdosing could lead to continued or recurrent hemorrhage, or failure to achieve the desired hemostatic effect.

Apply this code when documentation specifies that a patient's hemostatic drug regimen was inadequate, resulting in a suboptimal therapeutic effect. This is appropriate for the initial presentation of symptoms or complications directly attributable to the underdosing.

• Ensure documentation clearly states "underdosing" and specifies a hemostatic agent.
• This "A" suffix denotes an initial encounter for the underdosing event.
• Code any resulting adverse effects or complications of the underdosing separately.