V28 HCC 21Community non-dual aged RAF 0.671

Lymphoma and Other Cancers

Under the CMS-HCC V28 risk adjustment model (PY2026 Medicare Advantage), HCC 21 carries a community non-dual aged RAF of 0.671, and 463 payable ICD-10-CM diagnosis codes map to it. In the V28 hierarchy it is superseded by HCC 17, HCC 18, HCC 19, HCC 20 when a more severe category in the same disease group is also present.

RAF factors

The community factor varies by Medicaid and originally-disabled status; the institutional factor applies to long-term-institutional members. These are the CMS-HCC V28 PY2026 relative factors.

Community NA: 0.671Community PBA: 0.627Community FBA: 0.654Community ND: 0.54Community PBD: 0.618Community FBD: 0.739Institutional: 0.493

V28 hierarchy

Trumped by: HCC 17, HCC 18, HCC 19, HCC 20 (a more severe category in the same disease group supersedes this one).

Supersedes: HCC 22, HCC 23 (this category is counted instead of these when they co-occur).

ICD-10-CM codes that map to HCC 21 (463)

Payable diagnosis codes that map to this category under CMS-HCC V28 PY2026. Open any code for its full description, HCC mapping, and coding guidance.

Frequently asked questions

What is CMS-HCC V28 category 21?

HCC 21 is "Lymphoma and Other Cancers", a payment Hierarchical Condition Category in the CMS-HCC V28 risk adjustment model (100% phase-in for payment year 2026). 463 payable ICD-10-CM codes map to it.

What is the RAF weight for HCC 21?

The community non-dual aged relative factor for CMS-HCC V28 category 21 is 0.671. The exact factor varies by enrollment segment (community Medicaid and originally-disabled status, and institutional); the full segment table is published in the CMS V28 Rate Announcement.

How many ICD-10-CM codes map to HCC 21?

463 payable ICD-10-CM diagnosis codes map to CMS-HCC V28 category 21 (Lymphoma and Other Cancers) for payment year 2026.

Which categories trump HCC 21 in the V28 hierarchy?

HCC 21 is superseded by HCC 17 (Cancer Metastatic to Lung, Liver, Brain, and Other Organs; Acute Myeloid Leukemia Except Promyelocytic), HCC 18 (Cancer Metastatic to Bone, Other and Unspecified Metastatic Cancer; Acute Leukemia Except Myeloid), HCC 19 (Myelodysplastic Syndromes, Multiple Myeloma, and Other Cancers), HCC 20 (Lung and Other Severe Cancers). When a more severe category in the same disease group is documented, it is counted instead of HCC 21.

Source: CMS published ICD-10-CM mapping file plus CMS-HCC v28 PY2026 model software.