CMS-HCC Risk Adjustment · Retired V24 Model 61 Codes
V24 HCC 52 (Archived Category) ICD-10-CM
HCC 52 is a payment category of the retired CMS-HCC V24 model, which last determined Medicare Advantage payment in 2025. The 61 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; 22 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
61
ICD-10-CM Codes
39
Still Risk-Adjust in V28
22
No V28 Successor
PY 2025
Last Paid Year
CMS-HCC V24
Archived Codes of V24 HCC 52 61 codes
61 of 61 shown
- A81.00 Creutzfeldt-Jakob disease, unspecified now HCC 127
- A81.01 Variant Creutzfeldt-Jakob disease now HCC 127
- A81.09 Other Creutzfeldt-Jakob disease now HCC 127
- A81.1 Subacute sclerosing panencephalitis now HCC 127
- A81.2 Progressive multifocal leukoencephalopathy now HCC 127
- A81.81 Kuru now HCC 127
- A81.82 Gerstmann-Straussler-Scheinker syndrome now HCC 127
- A81.83 Fatal familial insomnia now HCC 127
- A81.89 Other atypical virus infections of central nervous system now HCC 127
- A81.9 Atypical virus infection of central nervous system, unspecified now HCC 127
- E75.00 GM2 gangliosidosis, unspecified no V28 successor
- E75.01 Sandhoff disease no V28 successor
- E75.02 Tay-Sachs disease no V28 successor
- E75.09 Other GM2 gangliosidosis no V28 successor
- E75.10 Unspecified gangliosidosis no V28 successor
- E75.11 Mucolipidosis IV no V28 successor
- E75.19 Other gangliosidosis no V28 successor
- E75.23 Krabbe disease no V28 successor
- E75.25 Metachromatic leukodystrophy no V28 successor
- E75.26 Sulfatase deficiency no V28 successor
- E75.27 Pelizaeus-Merzbacher disease no V28 successor
- E75.28 Canavan disease no V28 successor
- E75.29 Other sphingolipidosis no V28 successor
- E75.4 Neuronal ceroid lipofuscinosis no V28 successor
- F01.50 Vascular dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 127
- F01.A0 Vascular dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 127
- F01.B0 Vascular dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 126
- F01.C0 Vascular dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 125
- F02.80 Dementia in other diseases classified elsewhere, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 127
- F02.A0 Dementia in other diseases classified elsewhere, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 127
- F02.B0 Dementia in other diseases classified elsewhere, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 126
- F02.C0 Dementia in other diseases classified elsewhere, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 125
- F03.90 Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 127
- F03.A0 Unspecified dementia, mild, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 127
- F03.B0 Unspecified dementia, moderate, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 126
- F03.C0 Unspecified dementia, severe, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety now HCC 125
- F04 Amnestic disorder due to known physiological condition no V28 successor
- G13.2 Systemic atrophy primarily affecting the central nervous system in myxedema no V28 successor
- G13.8 Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere no V28 successor
- G30.0 Alzheimer's disease with early onset now HCC 127
- G30.1 Alzheimer's disease with late onset now HCC 127
- G30.8 Other Alzheimer's disease now HCC 127
- G30.9 Alzheimer's disease, unspecified now HCC 127
- G31.01 Pick's disease now HCC 127
- G31.09 Other frontotemporal neurocognitive disorder now HCC 127
- G31.1 Senile degeneration of brain, not elsewhere classified no V28 successor
- G31.2 Degeneration of nervous system due to alcohol no V28 successor
- G31.80 Leukodystrophy, unspecified now HCC 200
- G31.81 Alpers disease now HCC 127
- G31.82 Leigh's disease now HCC 127
- G31.83 Neurocognitive disorder with Lewy bodies now HCC 127
- G31.85 Corticobasal degeneration no V28 successor
- G31.86 Alexander disease now HCC 127
- G31.89 Other specified degenerative diseases of nervous system no V28 successor
- G31.9 Degenerative disease of nervous system, unspecified no V28 successor
- G90.B LMNB1-related autosomal dominant leukodystrophy now HCC 200
- G93.42 Megalencephalic leukoencephalopathy with subcortical cysts now HCC 200
- G93.43 Leukoencephalopathy with calcifications and cysts now HCC 200
- G93.44 Adult-onset leukodystrophy with axonal spheroids now HCC 200
- G93.7 Reye's syndrome now HCC 127
- I67.3 Progressive vascular leukoencephalopathy now HCC 127
Questions About This Archived Category
Is V24 HCC 52 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
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.
