Underdosing of unspecified hormone antagonists, sequela

This code signifies a long-term consequence or complication arising from the patient not receiving enough of an unidentifiable hormone antagonist medication. This underdosing has led to a persistent health issue that is directly attributable to the insufficient medication.

Apply this code when documentation clearly links a current, ongoing condition to a past instance of underdosing an unspecified hormone antagonist. This is appropriate for chronic or residual effects, such as a recurrence of a hormone-dependent condition due to inadequate prior treatment.

• Requires a seventh character "S" to indicate sequela, meaning the current condition is a residual effect of the underdosing.
• Always code the specific condition resulting from the underdosing first, followed by this code as a secondary diagnosis.
• Ensure documentation explicitly states the underdosing of a hormone antagonist and its causal link to the current sequela.