B20

Billable code

Human immunodeficiency virus [HIV] disease

The ICD-10 code for human immunodeficiency virus [hiv] disease is B20.

Clinical notes

Code first

This code represents a manifestation of an underlying disease. Coding convention requires the underlying (etiology) code to be sequenced first, with this code listed second.

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

Excludes1 (not coded here)

An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).

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

Includes

Terms listed here further define or give examples of the conditions grouped under this code — they describe what the code covers, not a separate diagnosis.

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

Use additional code

This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.

code(s) to identify all manifestations of HIV infection

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
•This code represents a manifestation. Documentation should identify the underlying condition, which must be coded first.
•If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

ICD-9-CM equivalent

Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.

View full ICD-10 → ICD-9 crosswalk →

Associated MS-DRGs

B20 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.

Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.