V24 HCC 2 (Archived Category) ICD-10-CM
HCC 2 is a payment category of the retired CMS-HCC V24 model, which last determined Medicare Advantage payment in 2025. The 53 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; 2 of them no longer risk-adjust at all.
Archived Codes of V24 HCC 2 53 codes
- A02.1 Salmonella sepsis now HCC 2
- A20.7 Septicemic plague now HCC 2
- A22.7 Anthrax sepsis now HCC 2
- A26.7 Erysipelothrix sepsis now HCC 2
- A32.7 Listerial sepsis now HCC 2
- A39.2 Acute meningococcemia now HCC 2
- A39.3 Chronic meningococcemia now HCC 2
- A39.4 Meningococcemia, unspecified now HCC 2
- A40.0 Sepsis due to streptococcus, group A now HCC 2
- A40.1 Sepsis due to streptococcus, group B now HCC 2
- A40.3 Sepsis due to Streptococcus pneumoniae now HCC 2
- A40.8 Other streptococcal sepsis now HCC 2
- A40.9 Streptococcal sepsis, unspecified now HCC 2
- A41.01 Sepsis due to Methicillin susceptible Staphylococcus aureus now HCC 2
- A41.02 Sepsis due to Methicillin resistant Staphylococcus aureus now HCC 2
- A41.1 Sepsis due to other specified staphylococcus now HCC 2
- A41.2 Sepsis due to unspecified staphylococcus now HCC 2
- A41.3 Sepsis due to Hemophilus influenzae now HCC 2
- A41.4 Sepsis due to anaerobes now HCC 2
- A41.50 Gram-negative sepsis, unspecified now HCC 2
- A41.51 Sepsis due to Escherichia coli [E. coli] now HCC 2
- A41.52 Sepsis due to Pseudomonas now HCC 2
- A41.53 Sepsis due to Serratia now HCC 2
- A41.54 Sepsis due to Acinetobacter baumannii now HCC 2
- A41.59 Other Gram-negative sepsis now HCC 2
- A41.81 Sepsis due to Enterococcus now HCC 2
- A41.89 Other specified sepsis now HCC 2
- A41.9 Sepsis, unspecified organism now HCC 2
- A42.7 Actinomycotic sepsis now HCC 2
- A48.3 Toxic shock syndrome now HCC 2
- A54.86 Gonococcal sepsis now HCC 2
- B00.7 Disseminated herpesviral disease now HCC 2
- B37.7 Candidal sepsis now HCC 2 now HCC 6
- M35.81 Multisystem inflammatory syndrome now HCC 2
- P02.70 Newborn affected by fetal inflammatory response syndrome now HCC 2
- P36.0 Sepsis of newborn due to streptococcus, group B now HCC 2
- P36.10 Sepsis of newborn due to unspecified streptococci now HCC 2
- P36.19 Sepsis of newborn due to other streptococci now HCC 2
- P36.2 Sepsis of newborn due to Staphylococcus aureus now HCC 2
- P36.30 Sepsis of newborn due to unspecified staphylococci now HCC 2
- P36.39 Sepsis of newborn due to other staphylococci now HCC 2
- P36.4 Sepsis of newborn due to Escherichia coli now HCC 2
- P36.5 Sepsis of newborn due to anaerobes now HCC 2
- P36.8 Other bacterial sepsis of newborn now HCC 2
- P36.9 Bacterial sepsis of newborn, unspecified now HCC 2
- R57.1 Hypovolemic shock now HCC 2
- R57.8 Other shock now HCC 2
- R65.10 Systemic inflammatory response syndrome (SIRS) of non-infectious origin without acute organ dysfunction now HCC 2
- R65.11 Systemic inflammatory response syndrome (SIRS) of non-infectious origin with acute organ dysfunction now HCC 2
- R65.20 Severe sepsis without septic shock now HCC 2
- R65.21 Severe sepsis with septic shock now HCC 2
- T81.12XA Postprocedural septic shock, initial encounter no V28 successor
- T81.44XA Sepsis following a procedure, initial encounter no V28 successor
Questions About This Archived Category
Is V24 HCC 2 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.
