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V28 HCC 383

Chronic Ulcer of Skin, Except Pressure, Not Specified as Through to Bone or Muscle

Under the CMS-HCC V28 risk adjustment model (PY2026 Medicare Advantage), HCC 383 has a source-labeled community non-dual aged reference coefficient of 0.646, and 308 ICD-10-CM diagnosis codes appear in its official mapping. In the V28 hierarchy it is superseded by HCC 263, HCC 379, HCC 380, HCC 381, HCC 382 when a more severe category in the same disease group is also present.

By the HCC Buddy Coding Team · Reviewed: May 30, 2026
V28 HCC 383Community non-dual aged reference coefficient 0.646
See ICD-10-CM codes for HCC 383Open the RAF Calculator

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: 0.646Community PBA: 0.66Community FBA: 0.89Community ND: 0.707Community PBD: 0.654Community FBD: 0.707Institutional: 0.343

These are source-labeled code-level HCC coefficient references, not a full member score. Use the RAF Calculator with complete member context for CMS-HCC V28 PY2026. No score is shown unless every required source and calculation check passes.

V28 hierarchy

Trumped by: HCC 263, HCC 379, HCC 380, HCC 381, HCC 382 (a more severe category in the same disease group supersedes this one).

ICD-10-CM codes that map to HCC 383 (308)

ICD-10-CM codes in the official mapping for this category under CMS-HCC V28 PY2026. Open any code for its full description and coding guidance.

Coder workflow notes

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Frequently asked questions

What is CMS-HCC V28 category 383?

HCC 383 is "Chronic Ulcer of Skin, Except Pressure, Not Specified as Through to Bone or Muscle", a Hierarchical Condition Category in the CMS-HCC V28 risk adjustment model (100% phase-in for payment year 2026). 308 ICD-10-CM codes appear in its official mapping.

What reference coefficient is published for HCC 383?

The source-labeled community non-dual aged reference coefficient for CMS-HCC V28 category 383 is 0.646. The exact coefficient varies by enrollment segment (community Medicaid and originally-disabled status, and institutional); the full segment table is published in the CMS V28 model files.

How many ICD-10-CM codes map to HCC 383?

308 ICD-10-CM diagnosis codes appear in the official mapping for CMS-HCC V28 category 383 (Chronic Ulcer of Skin, Except Pressure, Not Specified as Through to Bone or Muscle) for payment year 2026.

Which categories trump HCC 383 in the V28 hierarchy?

HCC 383 is superseded by HCC 263 (Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene), HCC 379 (Pressure Ulcer of Skin with Necrosis Through to Muscle, Tendon, or Bone), HCC 380 (Chronic Ulcer of Skin, Except Pressure, Through to Bone or Muscle), HCC 381 (Pressure Ulcer of Skin with Full Thickness Skin Loss), HCC 382 (Pressure Ulcer of Skin with Partial Thickness Skin Loss). When a more severe category in the same disease group is documented, it is counted instead of HCC 383.

Related condition guides

In-depth HCC coding guides for conditions that map to category 383, with documentation tips, common mistakes, and the V24-to-V28 changes.

Related references

Sources

CMS ICD-10-CM order-file billability plus the published mapping and 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.