ICD-10-CM Diagnosis Code (2025)
Official Description for Z51.81
Encounter for therapeutic drug level monitoring
Coding Notes & Guidelines for Z51.81
encounter for blood-drug test for administrative or medicolegal reasons (Z02.83)
any long-term (current) drug therapy (Z79.-)
Parent Code (Less Specific):
About ICD-10-CM Code Z51.81 (Encounter for therapeutic drug level monitoring)
ICD-10-CM code Z51.81 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Z51.81 became effective on October 1, 2024.
This page provides detailed information about Z51.81 - Encounter for therapeutic drug level monitoring. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Encounter for therapeutic drug level monitoring.