All ICD10 Codes

Z21

Billable
ChapterZ00–Z99
Rankcategory
Official Description

Asymptomatic human immunodeficiency virus [HIV] infection status

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Instructional Notes

Includes
  • HIV positive NOS
Excludes1(Not coded here. Use a different code.)
  • 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)
Code First
  • Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)

Clinical Hierarchy

BillableHas subcodes
CH21Factors influencing health status and contact with health services (Z00-Z99)
Z20-Z29Persons with potential health hazards related to communicable diseases (Z20-Z29)
Z21Asymptomatic human immunodeficiency virus [HIV] infection statusBillable

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 865
Viral Illness with MCC
DRG 866
Viral Illness without MCC

Cross Reference

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