R75 ICD-10-CM Code: Inconclusive laboratory evidence of human immunodeficiency virus [HIV]
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) / Abnormal findings on examination of blood, without diagnosis (R70-R79)
R75
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceInconclusive laboratory evidence of human immunodeficiency virus [HIV]
HIV test results are unclear or inconclusive, meaning the test cannot definitively confirm or rule out HIV infection at this time.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
Basket needed
Code Book Path
Inclusion Terms
Official- Nonconclusive HIV-test finding in infants
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for R75 in this effective period.
Related Child Codes
ICD-10-CM does not list child codes under R75 for this display context.
Includes
OfficialICD-10-CM does not list Includes notes for R75 in this effective period.
Excludes 1
Official- asymptomatic human immunodeficiency virus [HIV] infection status (Z21)
- human immunodeficiency virus [HIV] disease (B20)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for R75 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for R75 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for R75 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is R75 an HCC code?
No. R75 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
Coder workflow notes
Get the V28 RAF + MEAT cheat sheet
One printable page: confirm a code's V28 HCC status, its RAF weight, and the MEAT your note needs to make it stick. Free, no card.
Free PDF. No card. Unsubscribe anytime.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
R75 is the ICD-10-CM diagnosis code for inconclusive laboratory evidence of human immunodeficiency virus [hiv]. HIV test results are unclear or inconclusive, meaning the test cannot definitively confirm or rule out HIV infection at this time. R75 sits in the ICD-10-CM chapter for symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (r00-r99), within the section covering abnormal findings on examination of blood, without diagnosis (r70-r79).
R75 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
This code indicates indeterminate or inconclusive results - follow-up testing is typically required.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for R75 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.