2026 ICD-10-CM Diagnosis Code R57.1Hypovolemic shock
ICD-10-CM Codes›R00–R99›R50-R69›R57
- Billable — Valid for Submission
- MCC — Major Complication or Comorbidity
- Risk Adjusts — HCC 2
- Not Chronic
R57.1 is a billable ICD-10-CM diagnosis code for hypovolemic shock. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 870 through 872. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 48 closely related codes. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as hemorrhagic shock. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Shock.
For Medicare Advantage risk adjustment, R57.1 maps to CMS-HCC Category 2 (Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock) under the V28 model, adding a risk factor of about 0.500 for a community, non-dual, aged beneficiary in payment year 2026.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
R57.1 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2026.
Source: CMS Payment Year 2026 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Hemorrhagic shock
- Hypovolemic shock
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
hypovolemic R57.1
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Hemorrhagic Shock
hypoperfusion of body tissues due to acute blood loss, resulting in cellular injury and vital organ dysfunction.
Patient EducationClinical
Shock
Shock happens when not enough blood and oxygen can get to your organs and tissues. It causes very low blood pressure and may be life-threatening. It often happens along with a serious injury.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert R57.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R57.1Overview
What is the ICD-10 code for hypovolemic shock?
The ICD-10-CM code for hypovolemic shock is R57.1 (sometimes written as R571). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is R57.1 (Shock, not elsewhere classified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report hypovolemic shock on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does R57.1 group to?
When hypovolemic shock is the principal diagnosis on an inpatient stay, it groups to MS-DRG 870, 871, 872, with relative weights from 1.0233 to 6.9118 depending on complications. Higher weights mean higher Medicare reimbursement.
Is R57.1 a CC or MCC?
CMS lists R57.1 as an MCC (major complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 48 closely related codes in its exclusion list.
Can R57.1 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the hypovolemic shock is established, that condition takes the principal position instead.
What HCC is R57.1?
R57.1 (hypovolemic shock) maps to CMS-HCC Category 2 (Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock), commonly written as HCC 2, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2026. It mapped to HCC 2 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. It does not map to any RxHCC in the Part D prescription drug model.
Does R57.1 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, R57.1 adds a risk adjustment factor of about 0.500 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.447 to 0.780 depending on the payment segment). HCC 2 sits at the top of its hierarchy, so no other condition category supersedes it. See the full factor table on the HCC 2 category page.
