V28 HCC 18Community non-dual aged RAF 2.341

Cancer Metastatic to Bone, Other and Unspecified Metastatic Cancer; Acute Leukemia Except Myeloid

Under the CMS-HCC V28 risk adjustment model (PY2026 Medicare Advantage), HCC 18 carries a community non-dual aged RAF of 2.341, and 26 payable ICD-10-CM diagnosis codes map to it. In the V28 hierarchy it is superseded by HCC 17 when a more severe category in the same disease group is also present.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: 2.341Community PBA: 2.166Community FBA: 2.277Community ND: 2.486Community PBD: 2.403Community FBD: 2.537Institutional: 1.11

V28 hierarchy

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

Supersedes: HCC 19, HCC 20, HCC 21, HCC 22, HCC 23 (this category is counted instead of these when they co-occur).

ICD-10-CM codes that map to HCC 18 (26)

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 18?

HCC 18 is "Cancer Metastatic to Bone, Other and Unspecified Metastatic Cancer; Acute Leukemia Except Myeloid", a payment Hierarchical Condition Category in the CMS-HCC V28 risk adjustment model (100% phase-in for payment year 2026). 26 payable ICD-10-CM codes map to it.

What is the RAF weight for HCC 18?

The community non-dual aged relative factor for CMS-HCC V28 category 18 is 2.341. 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 18?

26 payable ICD-10-CM diagnosis codes map to CMS-HCC V28 category 18 (Cancer Metastatic to Bone, Other and Unspecified Metastatic Cancer; Acute Leukemia Except Myeloid) for payment year 2026.

Which categories trump HCC 18 in the V28 hierarchy?

HCC 18 is superseded by HCC 17 (Cancer Metastatic to Lung, Liver, Brain, and Other Organs; Acute Myeloid Leukemia Except Promyelocytic). When a more severe category in the same disease group is documented, it is counted instead of HCC 18.

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