ICDcodes.org
FY2027

B20 — Human immunodeficiency virus [HIV] disease

BillableCC

Is B20 billable?

Yes — B20 is billable for FY2027. B20 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. B20 may be submitted for encounters from October 1, 2026 through September 30, 2027.

B20 at a glance

CodeB20
DescriptionHuman immunodeficiency virus [HIV] disease
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does B20 group to?

B20 sits in MDC 25 and helps define the logic of 9 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 969HIV with Extensive O.R. Procedures with MCCsurgical
  • 970HIV with Extensive O.R. Procedures without MCCsurgical
  • 971—
  • 972—
  • 973—
  • 974HIV with Major Related Condition with MCCmedical
  • 975HIV with Major Related Condition with CCmedical
  • 976HIV with Major Related Condition without CC/MCCmedical
  • 977HIV with or without Other Related Conditionmedical

As a secondary diagnosis, B20 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.

How is B20 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to B20. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • AIDS (related complex)
  • ARC (AIDS-related complex)
  • HIV
  • Slim disease (in HIV infection)
  • Acquired › immunodeficiency syndrome
  • Disease, diseased › human immunodeficiency virus
  • Disease, diseased › slim
  • Human › immunodeficiency virus
  • Syndrome › HIV infection, acute
  • Dementia › in › human immunodeficiency virusdisease (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)
  • Disease, diseased › viral, virus › human immunodeficiency
  • Encephalitis › due to › human immunodeficiency virusdisease (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)

Excludes1 — never code together

The conditions below can never be reported together with B20 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
  • exposure to HIV virus (Z20.6)
  • inconclusive serologic evidence of HIV (R75)

Code first

The underlying condition below must be sequenced before B20. B20 describes a manifestation and cannot be the principal or first-listed diagnosis.

  • Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)

Use additional code

Report an additional code alongside B20 to fully describe the condition. B20 is sequenced first.

  • code(s) to identify all manifestations of HIV infection

Includes

Conditions classified to B20.

  • acquired immune deficiency syndrome [AIDS]
  • AIDS-related complex [ARC]
  • HIV infection, symptomatic

Use additional code — inherited from Chapter 1

Report an additional code alongside B20 to fully describe the condition. B20 is sequenced first.

  • code to identify resistance to antimicrobial drugs (Z16.-)

Excludes2 — not included here — inherited from Chapter 1

The conditions below are not part of B20, but a patient may have both at the same time. When documentation supports it, B20 and the excluded code may both be reported.

  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)

How long has B20 existed?

B20 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with B20?

ICD-10-CM declares these codes mutually exclusive with B20 — exactly one of each pair can be correct for a given encounter.

Which conditions are coded to B20?