ICD-10-CM Diagnosis Code (2025)
Official Description for Z21
Asymptomatic human immunodeficiency virus [HIV] infection status
Coding Notes & Guidelines for Z21
- acquired immunodeficiency syndrome (B20)
- contact with human immunodeficiency virus [HIV] (Z20.6)
- exposure to human immunodeficiency virus [HIV] (Z20.6)
- human immunodeficiency virus [HIV] disease (B20)
- inconclusive laboratory evidence of human immunodeficiency virus [HIV] (R75)
Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)
HIV positive NOS
About ICD-10-CM Code Z21 (Asymptomatic human immunodeficiency virus [HIV] infection status)
ICD-10-CM code Z21 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 Z21 became effective on October 1, 2024.
This page provides detailed information about Z21 - Asymptomatic human immunodeficiency virus [HIV] infection status. 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 Asymptomatic human immunodeficiency virus [HIV] infection status.