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V28 HCC 280Community non-dual aged RAF 0.319

Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders

Under the CMS-HCC V28 risk adjustment model (PY2026 Medicare Advantage), HCC 280 carries a community non-dual aged RAF of 0.319, and 79 payable ICD-10-CM diagnosis codes map to it. In the V28 hierarchy it is superseded by HCC 276, HCC 277, HCC 278, HCC 279 when a more severe category in the same disease group is also present.

Medically reviewed by Jess P., CPC · Reviewed: May 30, 2026

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: 0.319Community PBA: 0.321Community FBA: 0.39Community ND: 0.209Community PBD: 0.234Community FBD: 0.281Institutional: 0.312

Combine this factor with demographics and other HCCs in the RAF score calculator to model the full CMS-HCC V28 RAF for a member.

V28 hierarchy

Trumped by: HCC 276, HCC 277, HCC 278, HCC 279 (a more severe category in the same disease group supersedes this one).

ICD-10-CM codes that map to HCC 280 (79)

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.

Coder workflow notes

Get the V28 RAF + MEAT cheat sheet

A printable one-pager for HCC 280: which member codes risk-adjust, the RAF weight, and the MEAT your notes need to make it stick. Free, no card.

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Frequently asked questions

What is CMS-HCC V28 category 280?

HCC 280 is "Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders", a payment Hierarchical Condition Category in the CMS-HCC V28 risk adjustment model (100% phase-in for payment year 2026). 79 payable ICD-10-CM codes map to it.

What is the RAF weight for HCC 280?

The community non-dual aged relative factor for CMS-HCC V28 category 280 is 0.319. 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 280?

79 payable ICD-10-CM diagnosis codes map to CMS-HCC V28 category 280 (Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders) for payment year 2026.

Which categories trump HCC 280 in the V28 hierarchy?

HCC 280 is superseded by HCC 276 (Lung Transplant Status/Complications), HCC 277 (Cystic Fibrosis), HCC 278 (Idiopathic Pulmonary Fibrosis and Lung Involvement in Systemic Sclerosis), HCC 279 (Severe Persistent Asthma). When a more severe category in the same disease group is documented, it is counted instead of HCC 280.

Related condition guides

In-depth HCC coding guides for conditions that map to category 280, with documentation tips, common mistakes, and the V24-to-V28 changes.

Related references

Sources

CMS published ICD-10-CM mapping file plus CMS-HCC v28 PY2026 model software. CMS-HCC V28 model published at CMS.gov Risk Adjustors; ICD-10-CM member codes from the CMS ICD-10-CM code set.

Verified current to CMS-HCC V28, payment year 2026 — last reviewed May 30, 2026.