CMS-HCC Risk Adjustment · Retired V24 Model 56 Codes
V24 HCC 33 (Archived Category) ICD-10-CM
HCC 33 is a payment category of the retired CMS-HCC V24 model, which last determined Medicare Advantage payment in 2025. The 56 ICD-10-CM codes below are its final mappings, kept for lookback analysis and RADV audit reference. Each code shows where it maps in the live V28 model.
✗ Retired model · not used for current Medicare Advantage paymentLast paid PY 2025 · kept for lookback and RADV reference
56
ICD-10-CM Codes
56
Still Risk-Adjust in V28
0
No V28 Successor
PY 2025
Last Paid Year
CMS-HCC V24
Archived Codes of V24 HCC 33 56 codes
56 of 56 shown
- A54.85 Gonococcal peritonitis now HCC 78
- K25.1 Acute gastric ulcer with perforation now HCC 78
- K25.2 Acute gastric ulcer with both hemorrhage and perforation now HCC 78
- K25.5 Chronic or unspecified gastric ulcer with perforation now HCC 78
- K25.6 Chronic or unspecified gastric ulcer with both hemorrhage and perforation now HCC 78
- K26.1 Acute duodenal ulcer with perforation now HCC 78
- K26.2 Acute duodenal ulcer with both hemorrhage and perforation now HCC 78
- K26.5 Chronic or unspecified duodenal ulcer with perforation now HCC 78
- K26.6 Chronic or unspecified duodenal ulcer with both hemorrhage and perforation now HCC 78
- K27.1 Acute peptic ulcer, site unspecified, with perforation now HCC 78
- K27.2 Acute peptic ulcer, site unspecified, with both hemorrhage and perforation now HCC 78
- K27.5 Chronic or unspecified peptic ulcer, site unspecified, with perforation now HCC 78
- K27.6 Chronic or unspecified peptic ulcer, site unspecified, with both hemorrhage and perforation now HCC 78
- K28.1 Acute gastrojejunal ulcer with perforation now HCC 78
- K28.2 Acute gastrojejunal ulcer with both hemorrhage and perforation now HCC 78
- K28.5 Chronic or unspecified gastrojejunal ulcer with perforation now HCC 78
- K28.6 Chronic or unspecified gastrojejunal ulcer with both hemorrhage and perforation now HCC 78
- K50.012 Crohn's disease of small intestine with intestinal obstruction now HCC 78 now HCC 80
- K50.112 Crohn's disease of large intestine with intestinal obstruction now HCC 78 now HCC 80
- K50.812 Crohn's disease of both small and large intestine with intestinal obstruction now HCC 78 now HCC 80
- K50.912 Crohn's disease, unspecified, with intestinal obstruction now HCC 78 now HCC 80
- K51.012 Ulcerative (chronic) pancolitis with intestinal obstruction now HCC 78 now HCC 81
- K51.212 Ulcerative (chronic) proctitis with intestinal obstruction now HCC 78 now HCC 81
- K51.312 Ulcerative (chronic) rectosigmoiditis with intestinal obstruction now HCC 78 now HCC 81
- K51.412 Inflammatory polyps of colon with intestinal obstruction now HCC 78 now HCC 81
- K51.512 Left sided colitis with intestinal obstruction now HCC 78 now HCC 81
- K51.812 Other ulcerative colitis with intestinal obstruction now HCC 78 now HCC 81
- K51.912 Ulcerative colitis, unspecified with intestinal obstruction now HCC 78 now HCC 81
- K56.0 Paralytic ileus now HCC 78
- K56.1 Intussusception now HCC 78
- K56.2 Volvulus now HCC 78
- K56.3 Gallstone ileus now HCC 78
- K56.41 Fecal impaction now HCC 78
- K56.49 Other impaction of intestine now HCC 78
- K56.50 Intestinal adhesions [bands], unspecified as to partial versus complete obstruction now HCC 78
- K56.51 Intestinal adhesions [bands], with partial obstruction now HCC 78
- K56.52 Intestinal adhesions [bands] with complete obstruction now HCC 78
- K56.600 Partial intestinal obstruction, unspecified as to cause now HCC 78
- K56.601 Complete intestinal obstruction, unspecified as to cause now HCC 78
- K56.609 Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction now HCC 78
- K56.690 Other partial intestinal obstruction now HCC 78
- K56.691 Other complete intestinal obstruction now HCC 78
- K56.699 Other intestinal obstruction unspecified as to partial versus complete obstruction now HCC 78
- K56.7 Ileus, unspecified now HCC 78
- K59.31 Toxic megacolon now HCC 78
- K63.1 Perforation of intestine (nontraumatic) now HCC 78
- K65.0 Generalized (acute) peritonitis now HCC 78
- K65.1 Peritoneal abscess now HCC 78
- K65.2 Spontaneous bacterial peritonitis now HCC 78
- K65.3 Choleperitonitis now HCC 78
- K65.4 Sclerosing mesenteritis now HCC 78
- K65.8 Other peritonitis now HCC 78
- K65.9 Peritonitis, unspecified now HCC 78
- K67 Disorders of peritoneum in infectious diseases classified elsewhere now HCC 78
- K68.12 Psoas muscle abscess now HCC 78
- K68.19 Other retroperitoneal abscess now HCC 78
Questions About This Archived Category
Is V24 HCC 33 still paid?
No. The CMS-HCC V24 model last determined Medicare Advantage payment in 2025; from payment year 2026 the V28 model pays 100% of the risk score. This page exists for lookback analysis and RADV audit periods that predate the transition.
Where did these codes go in V28?
Each row above names the code's live V28 category. The category-level picture, with destination counts for every V24 category, is on V24 to V28: What Changed.
Related References
Source: Centers for Medicare & Medicaid Services, Payment Year 2026 risk adjustment mapping and model software releases (CMS-HCC V28; CMS-HCC V24 from the last published V24 mappings, payment year 2025), applied to the FY 2026 ICD-10-CM code set. ICD List is not affiliated with CMS.
