CMS-HCC Risk Adjustment · Retired V24 Model 99 Codes

V24 HCC 100 (Archived Category) ICD-10-CM

HCC 100 is a payment category of the retired CMS-HCC V24 model, which last determined Medicare Advantage payment in 2025. The 99 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; 4 of them no longer risk-adjust at all.

✗ Retired model · not used for current Medicare Advantage paymentLast paid PY 2025 · kept for lookback and RADV reference
99
ICD-10-CM Codes
95
Still Risk-Adjust in V28
4
No V28 Successor
PY 2025
Last Paid Year
CMS-HCC V24

Archived Codes of V24 HCC 100 99 codes

99 of 99 shown
  • I63.00 Cerebral infarction due to thrombosis of unspecified precerebral artery now HCC 249
  • I63.011 Cerebral infarction due to thrombosis of right vertebral artery now HCC 249
  • I63.012 Cerebral infarction due to thrombosis of left vertebral artery now HCC 249
  • I63.013 Cerebral infarction due to thrombosis of bilateral vertebral arteries now HCC 249
  • I63.019 Cerebral infarction due to thrombosis of unspecified vertebral artery now HCC 249
  • I63.02 Cerebral infarction due to thrombosis of basilar artery now HCC 249
  • I63.031 Cerebral infarction due to thrombosis of right carotid artery now HCC 249
  • I63.032 Cerebral infarction due to thrombosis of left carotid artery now HCC 249
  • I63.033 Cerebral infarction due to thrombosis of bilateral carotid arteries now HCC 249
  • I63.039 Cerebral infarction due to thrombosis of unspecified carotid artery now HCC 249
  • I63.09 Cerebral infarction due to thrombosis of other precerebral artery now HCC 249
  • I63.10 Cerebral infarction due to embolism of unspecified precerebral artery now HCC 249
  • I63.111 Cerebral infarction due to embolism of right vertebral artery now HCC 249
  • I63.112 Cerebral infarction due to embolism of left vertebral artery now HCC 249
  • I63.113 Cerebral infarction due to embolism of bilateral vertebral arteries now HCC 249
  • I63.119 Cerebral infarction due to embolism of unspecified vertebral artery now HCC 249
  • I63.12 Cerebral infarction due to embolism of basilar artery now HCC 249
  • I63.131 Cerebral infarction due to embolism of right carotid artery now HCC 249
  • I63.132 Cerebral infarction due to embolism of left carotid artery now HCC 249
  • I63.133 Cerebral infarction due to embolism of bilateral carotid arteries now HCC 249
  • I63.139 Cerebral infarction due to embolism of unspecified carotid artery now HCC 249
  • I63.19 Cerebral infarction due to embolism of other precerebral artery now HCC 249
  • I63.20 Cerebral infarction due to unspecified occlusion or stenosis of unspecified precerebral arteries now HCC 249
  • I63.211 Cerebral infarction due to unspecified occlusion or stenosis of right vertebral artery now HCC 249
  • I63.212 Cerebral infarction due to unspecified occlusion or stenosis of left vertebral artery now HCC 249
  • I63.213 Cerebral infarction due to unspecified occlusion or stenosis of bilateral vertebral arteries now HCC 249
  • I63.219 Cerebral infarction due to unspecified occlusion or stenosis of unspecified vertebral artery now HCC 249
  • I63.22 Cerebral infarction due to unspecified occlusion or stenosis of basilar artery now HCC 249
  • I63.231 Cerebral infarction due to unspecified occlusion or stenosis of right carotid arteries now HCC 249
  • I63.232 Cerebral infarction due to unspecified occlusion or stenosis of left carotid arteries now HCC 249
  • I63.233 Cerebral infarction due to unspecified occlusion or stenosis of bilateral carotid arteries now HCC 249
  • I63.239 Cerebral infarction due to unspecified occlusion or stenosis of unspecified carotid artery now HCC 249
  • I63.29 Cerebral infarction due to unspecified occlusion or stenosis of other precerebral arteries now HCC 249
  • I63.30 Cerebral infarction due to thrombosis of unspecified cerebral artery now HCC 249
  • I63.311 Cerebral infarction due to thrombosis of right middle cerebral artery now HCC 249
  • I63.312 Cerebral infarction due to thrombosis of left middle cerebral artery now HCC 249
  • I63.313 Cerebral infarction due to thrombosis of bilateral middle cerebral arteries now HCC 249
  • I63.319 Cerebral infarction due to thrombosis of unspecified middle cerebral artery now HCC 249
  • I63.321 Cerebral infarction due to thrombosis of right anterior cerebral artery now HCC 249
  • I63.322 Cerebral infarction due to thrombosis of left anterior cerebral artery now HCC 249
  • I63.323 Cerebral infarction due to thrombosis of bilateral anterior cerebral arteries now HCC 249
  • I63.329 Cerebral infarction due to thrombosis of unspecified anterior cerebral artery now HCC 249
  • I63.331 Cerebral infarction due to thrombosis of right posterior cerebral artery now HCC 249
  • I63.332 Cerebral infarction due to thrombosis of left posterior cerebral artery now HCC 249
  • I63.333 Cerebral infarction due to thrombosis of bilateral posterior cerebral arteries now HCC 249
  • I63.339 Cerebral infarction due to thrombosis of unspecified posterior cerebral artery now HCC 249
  • I63.341 Cerebral infarction due to thrombosis of right cerebellar artery now HCC 249
  • I63.342 Cerebral infarction due to thrombosis of left cerebellar artery now HCC 249
  • I63.343 Cerebral infarction due to thrombosis of bilateral cerebellar arteries now HCC 249
  • I63.349 Cerebral infarction due to thrombosis of unspecified cerebellar artery now HCC 249
  • I63.39 Cerebral infarction due to thrombosis of other cerebral artery now HCC 249
  • I63.40 Cerebral infarction due to embolism of unspecified cerebral artery now HCC 249
  • I63.411 Cerebral infarction due to embolism of right middle cerebral artery now HCC 249
  • I63.412 Cerebral infarction due to embolism of left middle cerebral artery now HCC 249
  • I63.413 Cerebral infarction due to embolism of bilateral middle cerebral arteries now HCC 249
  • I63.419 Cerebral infarction due to embolism of unspecified middle cerebral artery now HCC 249
  • I63.421 Cerebral infarction due to embolism of right anterior cerebral artery now HCC 249
  • I63.422 Cerebral infarction due to embolism of left anterior cerebral artery now HCC 249
  • I63.423 Cerebral infarction due to embolism of bilateral anterior cerebral arteries now HCC 249
  • I63.429 Cerebral infarction due to embolism of unspecified anterior cerebral artery now HCC 249
  • I63.431 Cerebral infarction due to embolism of right posterior cerebral artery now HCC 249
  • I63.432 Cerebral infarction due to embolism of left posterior cerebral artery now HCC 249
  • I63.433 Cerebral infarction due to embolism of bilateral posterior cerebral arteries now HCC 249
  • I63.439 Cerebral infarction due to embolism of unspecified posterior cerebral artery now HCC 249
  • I63.441 Cerebral infarction due to embolism of right cerebellar artery now HCC 249
  • I63.442 Cerebral infarction due to embolism of left cerebellar artery now HCC 249
  • I63.443 Cerebral infarction due to embolism of bilateral cerebellar arteries now HCC 249
  • I63.449 Cerebral infarction due to embolism of unspecified cerebellar artery now HCC 249
  • I63.49 Cerebral infarction due to embolism of other cerebral artery now HCC 249
  • I63.50 Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebral artery now HCC 249
  • I63.511 Cerebral infarction due to unspecified occlusion or stenosis of right middle cerebral artery now HCC 249
  • I63.512 Cerebral infarction due to unspecified occlusion or stenosis of left middle cerebral artery now HCC 249
  • I63.513 Cerebral infarction due to unspecified occlusion or stenosis of bilateral middle cerebral arteries now HCC 249
  • I63.519 Cerebral infarction due to unspecified occlusion or stenosis of unspecified middle cerebral artery now HCC 249
  • I63.521 Cerebral infarction due to unspecified occlusion or stenosis of right anterior cerebral artery now HCC 249
  • I63.522 Cerebral infarction due to unspecified occlusion or stenosis of left anterior cerebral artery now HCC 249
  • I63.523 Cerebral infarction due to unspecified occlusion or stenosis of bilateral anterior cerebral arteries now HCC 249
  • I63.529 Cerebral infarction due to unspecified occlusion or stenosis of unspecified anterior cerebral artery now HCC 249
  • I63.531 Cerebral infarction due to unspecified occlusion or stenosis of right posterior cerebral artery now HCC 249
  • I63.532 Cerebral infarction due to unspecified occlusion or stenosis of left posterior cerebral artery now HCC 249
  • I63.533 Cerebral infarction due to unspecified occlusion or stenosis of bilateral posterior cerebral arteries now HCC 249
  • I63.539 Cerebral infarction due to unspecified occlusion or stenosis of unspecified posterior cerebral artery now HCC 249
  • I63.541 Cerebral infarction due to unspecified occlusion or stenosis of right cerebellar artery now HCC 249
  • I63.542 Cerebral infarction due to unspecified occlusion or stenosis of left cerebellar artery now HCC 249
  • I63.543 Cerebral infarction due to unspecified occlusion or stenosis of bilateral cerebellar arteries now HCC 249
  • I63.549 Cerebral infarction due to unspecified occlusion or stenosis of unspecified cerebellar artery now HCC 249
  • I63.59 Cerebral infarction due to unspecified occlusion or stenosis of other cerebral artery now HCC 249
  • I63.6 Cerebral infarction due to cerebral venous thrombosis, nonpyogenic now HCC 249
  • I63.81 Other cerebral infarction due to occlusion or stenosis of small artery now HCC 249
  • I63.89 Other cerebral infarction now HCC 249
  • I63.9 Cerebral infarction, unspecified now HCC 249
  • I97.810 Intraoperative cerebrovascular infarction during cardiac surgery no V28 successor
  • I97.811 Intraoperative cerebrovascular infarction during other surgery no V28 successor
  • I97.820 Postprocedural cerebrovascular infarction following cardiac surgery no V28 successor
  • I97.821 Postprocedural cerebrovascular infarction following other surgery no V28 successor
  • P91.821 Neonatal cerebral infarction, right side of brain now HCC 249
  • P91.822 Neonatal cerebral infarction, left side of brain now HCC 249
  • P91.823 Neonatal cerebral infarction, bilateral now HCC 249
  • P91.829 Neonatal cerebral infarction, unspecified side now HCC 249

Questions About This Archived Category

Is V24 HCC 100 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, or marks it as having no V28 successor. The category-level picture, with destination counts for every V24 category, is on V24 to V28: What Changed.

Related References

CMS-HCC V24 ArchiveAll Live V28 CategoriesV24 to V28: What ChangedICD-10-CM Code Lookup

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.