Underdosing of unsp hormones and synthetic substitutes, init

This code signifies a patient experiencing adverse effects due to receiving an insufficient amount of an unspecified hormone or synthetic substitute. This underdosing can lead to a return or worsening of the condition the medication was intended to treat.

Apply this code when documentation indicates a patient's symptoms or condition are attributable to not receiving enough of a hormone or synthetic substitute, and the specific substance is not identified. This is appropriate for the initial encounter where the underdosing is first recognized and treated.

• Ensure the documentation clearly states "underdosing" and that the specific hormone or synthetic substitute is not specified.
• This "A" seventh character indicates the initial encounter for the underdosing event, not necessarily the first time the patient has seen the provider.
• Always code the specific adverse effect or symptom resulting from the underdosing as a secondary diagnosis.