FY2027 ICD-10-CM reference
B20: Human immunodeficiency virus [HIV] disease
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Human immunodeficiency virus [HIV] disease. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Billable code. Verified against the official FY2027 order file.
Oct to Dec 2026, PY2027
CMS-HCC V28
Mapped- HCC 1HIV/AIDSCoefficient 0.301 (CNA, PY2027)
CMS-HCC V24
Not used by CMSESRD
Mapped- HCC 1HIV/AIDSCoefficient 0.122 (Dialysis CE, PY2027)
RxHCC
Mapped- HCC 1HIV/AIDSCoefficient 8.304 (MA-PD CE non-low aged, PY2027)
PACE (CMS-HCC V22 component)
Mapped- HCC 1HIV/AIDS
PACE ESRD (ESRD V21 component)
Mapped- HCC 1HIV/AIDS
PACE RxHCC (2018/2019 component)
Mapped- HCC 1HIV/AIDS
Jan to Sep 2027, PY2028
CMS-HCC V28
Not published by CMSCMS-HCC V24
Not published by CMSESRD
Not published by CMSRxHCC
Not published by CMSPACE (CMS-HCC V22 component)
Not published by CMSPACE ESRD (ESRD V21 component)
Not published by CMSPACE RxHCC component
Not published by CMSOct to Dec 2026, BY2026
HHS-HCC
PendingJan to Sep 2027, BY2027
HHS-HCC
Not published by CMSFY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Includes
diseases generally recognized as communicable or transmissible
Source: A00-B99 (chapter, inherited).
Instructional note
code to identify resistance to antimicrobial drugs (Z16.-)
Source: A00-B99 (chapter, inherited).
Excludes2
carrier or suspected carrier of infectious disease (Z22.-)
Source: A00-B99 (chapter, inherited).
Excludes2
certain localized infections - see body system-related chapters
Source: A00-B99 (chapter, inherited).
Excludes2
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
Source: A00-B99 (chapter, inherited).
Excludes2
infectious and parasitic diseases specific to the perinatal period (P35-P39)
Source: A00-B99 (chapter, inherited).
Excludes2
influenza and other acute respiratory infections (J00-J22)
Source: A00-B99 (chapter, inherited).
Includes
acquired immune deficiency syndrome [AIDS]
Source: B20 (category, direct).
Includes
AIDS-related complex [ARC]
Source: B20 (category, direct).
Includes
HIV infection, symptomatic
Source: B20 (category, direct).
Code first
Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)
Source: B20 (category, direct).
Instructional note
code(s) to identify all manifestations of HIV infection
Source: B20 (category, direct).
Excludes1
asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
Source: B20 (category, direct).
Excludes1
exposure to HIV virus (Z20.6)
Source: B20 (category, direct).
Excludes1
inconclusive serologic evidence of HIV (R75)
Source: B20 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does B20 mean in FY2027?
The official ICD-10-CM descriptor is Human immunodeficiency virus [HIV] disease. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is B20 billable in FY2027?
The FY2027 order file marks B20 as billable. Check the complete Tabular instructions and documentation before assigning it.
Does B20 map to an HCC?
Oct to Dec 2026, PY2027: CMS-HCC V28 HCC 1 (HIV/AIDS); CMS-HCC V24: Not used by CMS; ESRD HCC 1 (HIV/AIDS); RxHCC HCC 1 (HIV/AIDS). Jan to Sep 2027, PY2028: CMS-HCC V28: Not published by CMS; CMS-HCC V24: Not published by CMS; ESRD: Not published by CMS; RxHCC: Not published by CMS. Oct to Dec 2026, BY2026: HHS-HCC: Pending. Jan to Sep 2027, BY2027: HHS-HCC: Not published by CMS. Base coefficients are reference values, not a member total.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition