Z21BillableSave
Z21 - Asymptomatic human immunodeficiency virus [HIV] infection status
ICD-10-CM Chapter 21: Factors influencing health status and contact with health services · Z20-Z29 Persons with potential health hazards related to communicable diseases (Z20-Z29) · Top-level category · FY2027
Applicable To
Inclusion terms listed under Z21 in the ICD-10-CM tabular list.
- HIV positive NOS
Includes, Excludes and Coding Notes
Excludes 1 — Not Coded HereFrom Z21
Mutually exclusive: these conditions are never reported together with this 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 FirstFrom Z21
Sequence the underlying condition before this code.
- Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)
NotesFrom Chapter Z00-Z99
Instructional notes from the ICD-10-CM tabular list.
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Inpatient DRG Payments
DRG 8663,607 discharges
Viral Illness Without Mcc
Avg. Medicare Payment
$6,873
Total Payment$9,637
Patient Responsibility$2,764
Hospital Charge$42,399
DRG 8653,043 discharges
Viral Illness With Mcc
Avg. Medicare Payment
$13,644
Total Payment$16,774
Patient Responsibility$3,130
Hospital Charge$74,310
Chapter Information
Chapter 21: Factors influencing health status and contact with health services
Range: Z00-Z99
View full chapterOther categories in this chapter
Codes at the same level as Z21
- Encounter for general examination without complaint, suspected or reported diagnosisZ00
- Encounter for other special examination without complaint, suspected or reported diagnosisZ01
- Encounter for administrative examinationZ02
- Encounter for medical observation for suspected diseases and conditions ruled outZ03
- Encounter for examination and observation for other reasonsZ04
- Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled outZ05
- Encounter for follow-up examination after completed treatment for malignant neoplasmZ08
- Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasmZ09
- Encounter for screening for infectious and parasitic diseasesZ11
- Encounter for screening for malignant neoplasmsZ12
- Encounter for screening for other diseases and disordersZ13
- Genetic carrierZ14
- Genetic susceptibility to diseaseZ15
- Resistance to antimicrobial drugsZ16
- Estrogen, and other hormones and factors receptor statusZ17
- Retained foreign body fragmentsZ18
- Hormone sensitivity malignancy statusZ19
- Contact with and (suspected) exposure to communicable diseasesZ20
- Carrier of infectious diseaseZ22
- Encounter for immunizationZ23
- Immunization not carried out and underimmunization statusZ28
- Encounter for other prophylactic measuresZ29
- Encounter for contraceptive managementZ30
- Encounter for procreative managementZ31
- Encounter for pregnancy test and childbirth and childcare instructionZ32
- Pregnant stateZ33
- Encounter for supervision of normal pregnancyZ34
- Encounter for antenatal screening of motherZ36
- Outcome of deliveryZ37
- Liveborn infants according to place of birth and type of deliveryZ38
- Encounter for maternal postpartum care and examinationZ39
- Weeks of gestationZ3A
- Encounter for prophylactic surgeryZ40
- Encounter for procedures for purposes other than remedying health stateZ41
- Encounter for plastic and reconstructive surgery following medical procedure or healed injuryZ42
- Encounter for attention to artificial openingsZ43
- Encounter for fitting and adjustment of external prosthetic deviceZ44
- Encounter for adjustment and management of implanted deviceZ45
- Encounter for fitting and adjustment of other devicesZ46
- Orthopedic aftercareZ47
49 more in this chapter.