Z00-Z9972 V28 risk-adjusting codes
Factors influencing health status and contact with health services
ICD-10-CM Chapter 21 (Z00-Z99) in the FY2026 code set. 72 codes in this chapter map to a CMS-HCC V28 payment category, across 13 HCC categories.
CMS-HCC V28 categories in this chapter (13)
Open any category for its full member-code list, RAF, and hierarchy.
- HCC 409 Amputation Status, Lower Limb/Amputation Complications24
- HCC 463 Artificial Openings for Feeding or Elimination19
- HCC 48 Morbid Obesity6
- HCC 211 Respirator Dependence/Tracheostomy Status/Complications4
- HCC 221 Heart Transplant Status/Complications4
- HCC 276 Lung Transplant Status/Complications4
- HCC 454 Stem Cell, Including Bone Marrow, Transplant Status/Complications3
- HCC 62 Liver Transplant Status/Complications2
- HCC 223 Heart Assist Device/Artificial Heart2
- HCC 1 HIV/AIDS1
- HCC 38 Diabetes with No, Glycemic, or Unspecified Complications1
- HCC 77 Intestine Transplant Status/Complications1
- HCC 35 Pancreas Transplant Status1
Risk-adjusting ICD-10-CM codes (72)
Codes in this chapter that map to a CMS-HCC V28 payment category. Open any code for its full detail.
- Z21Asymptomatic human immunodeficiency virus [HIV] infection status
- Z43.0Encounter for attention to tracheostomy
- Z43.1Encounter for attention to gastrostomy
- Z43.2Encounter for attention to ileostomy
- Z43.3Encounter for attention to colostomy
- Z43.4Encounter for attention to other artificial openings of digestive tract
- Z43.5Encounter for attention to cystostomy
- Z43.6Encounter for attention to other artificial openings of urinary tract
- Z43.8Encounter for attention to other artificial openings
- Z43.9Encounter for attention to unspecified artificial opening
- Z44.101Encounter for fitting and adjustment of unspecified right artificial leg
- Z44.102Encounter for fitting and adjustment of unspecified left artificial leg
- Z44.109Encounter for fitting and adjustment of unspecified artificial leg, unspecified leg
- Z44.111Encounter for fitting and adjustment of complete right artificial leg
- Z44.112Encounter for fitting and adjustment of complete left artificial leg
- Z44.119Encounter for fitting and adjustment of complete artificial leg, unspecified leg
- Z44.121Encounter for fitting and adjustment of partial artificial right leg
- Z44.122Encounter for fitting and adjustment of partial artificial left leg
- Z44.129Encounter for fitting and adjustment of partial artificial leg, unspecified leg
- Z48.21Encounter for aftercare following heart transplant
- Z48.23Encounter for aftercare following liver transplant
- Z48.24Encounter for aftercare following lung transplant
- Z48.280Encounter for aftercare following heart-lung transplant
- Z48.280Encounter for aftercare following heart-lung transplant
- Z48.290Encounter for aftercare following bone marrow transplant
- Z68.41Body mass index [BMI] 40.0-44.9, adult
- Z68.42Body mass index [BMI] 45.0-49.9, adult
- Z68.43Body mass index [BMI] 50.0-59.9, adult
- Z68.44Body mass index [BMI] 60.0-69.9, adult
- Z68.45Body mass index [BMI] 70 or greater, adult
- Z68.56Body mass index [BMI] pediatric, greater than or equal to 140% of the 95th percentile for age
- Z79.4Long term (current) use of insulin
- Z89.431Acquired absence of right foot
- Z89.432Acquired absence of left foot
- Z89.439Acquired absence of unspecified foot
- Z89.441Acquired absence of right ankle
- Z89.442Acquired absence of left ankle
- Z89.449Acquired absence of unspecified ankle
- Z89.511Acquired absence of right leg below knee
- Z89.512Acquired absence of left leg below knee
- Z89.519Acquired absence of unspecified leg below knee
- Z89.611Acquired absence of right leg above knee
- Z89.612Acquired absence of left leg above knee
- Z89.619Acquired absence of unspecified leg above knee
- Z93.0Tracheostomy status
- Z93.1Gastrostomy status
- Z93.2Ileostomy status
- Z93.3Colostomy status
- Z93.4Other artificial openings of gastrointestinal tract status
- Z93.50Unspecified cystostomy status
- Z93.51Cutaneous-vesicostomy status
- Z93.52Appendico-vesicostomy status
- Z93.59Other cystostomy status
- Z93.6Other artificial openings of urinary tract status
- Z93.8Other artificial opening status
- Z93.9Artificial opening status, unspecified
- Z94.1Heart transplant status
- Z94.2Lung transplant status
- Z94.3Heart and lungs transplant status
- Z94.3Heart and lungs transplant status
- Z94.4Liver transplant status
- Z94.81Bone marrow transplant status
- Z94.82Intestine transplant status
- Z94.83Pancreas transplant status
- Z94.84Stem cells transplant status
- Z95.811Presence of heart assist device
- Z95.812Presence of fully implantable artificial heart
- Z97.13Presence of artificial right leg (complete) (partial)
- Z97.14Presence of artificial left leg (complete) (partial)
- Z97.16Presence of artificial legs, bilateral (complete) (partial)
- Z99.11Dependence on respirator [ventilator] status
- Z99.12Encounter for respirator [ventilator] dependence during power failure
Frequently asked questions
How many ICD-10-CM codes in Factors influencing health status and contact with health services risk-adjust under CMS-HCC V28?
72 ICD-10-CM codes in the Z00-Z99 chapter (Factors influencing health status and contact with health services) map to a CMS-HCC V28 payment category for payment year 2026.
Which CMS-HCC V28 categories do Z00-Z99 codes map to?
Codes in this chapter map to 13 distinct CMS-HCC V28 categories, most commonly HCC 409 (Amputation Status, Lower Limb/Amputation Complications), HCC 463 (Artificial Openings for Feeding or Elimination), HCC 48 (Morbid Obesity).
What ICD-10-CM chapter is Z00-Z99?
Z00-Z99 is ICD-10-CM Chapter 21, Factors influencing health status and contact with health services, in the FY2026 code set.
Source: FY2026 ICD-10-CM Tabular (CDC/NCHS) and the CMS-HCC v28 PY2026 mapping file.