Asymptomatic human immunodeficiency virus [HIV] infection status Z21

  • Z21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM Z21 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of Z21 - other international versions of ICD-10 Z21 may differ.
Applicable To:
  • HIV positive NOS
Code First:
  • Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)
Type 1 Excludes:
  • 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)

Codes: = Billable

  • Z21 Asymptomatic human immunodeficiency virus [HIV] infection status

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.