2027 ICD-10-CM Diagnosis Code R57.8Other 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
R57.8 is a billable ICD-10-CM diagnosis code for other shock. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) 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. This status applies only when the patient is discharged alive, and not 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 hypoglycemic shock. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Shock.
For Medicare Advantage risk adjustment, R57.8 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 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
R57.8 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 2027.
Source: CMS Payment Year 2027 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.
- Hypoglycemic shock
- Neurogenic shock
- Obstructive shock
- Vasogenic shock
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to R57.8: its own notes plus those printed at R57 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- anaphylactic shock NOS (T78.2)
- anaphylactic reaction or shock due to adverse food reaction (T78.0-)
- anaphylactic shock due to adverse effect of correct drug or medicament properly administered (T88.6)
- anaphylactic shock due to serum (T80.5-)
- electric shock (T75.4)
- obstetric shock (O75.1)
- postprocedural shock (T81.1-)
- psychic shock (F43.0)
- shock complicating or following ectopic or molar pregnancy (O00-O07, O08.3)
- shock due to anesthesia (T88.2)
- shock due to lightning (T75.01)
- traumatic shock (T79.4)
- toxic shock syndrome (A48.3)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- The conditions and signs or symptoms included in categories R00-R94 consist of:
- (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- (e) cases in which a more precise diagnosis was not available for any other reason;
- (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name R57.8, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming R57.8: they are not reported together with it, unless the two conditions are unrelated.
Code First 1
These codes say to code first a condition named in the note, and R57.8 is one of the conditions named.
- I21.A1 Myocardial infarction type 2
Use Additional Code 1
These codes say to use an additional code from the note, and R57.8 is one of the codes named.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
hematologic R57.8
hemorrhagic R57.8
specified NEC R57.8
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Shock
a pathological condition manifested by failure to perfuse or oxygenate vital organs.
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 R57.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R57.8Overview
What is the ICD-10 code for other shock?
The ICD-10-CM code for other shock is R57.8 (sometimes written as R578). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is R57.8 (Shock, not elsewhere classified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other shock on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does R57.8 group to?
When other shock is the principal diagnosis on an inpatient stay, it groups to MS-DRG 872, 871, 870, with relative weights from 1.0066 to 6.9432 depending on complications. Higher weights mean higher Medicare reimbursement.
Is R57.8 a CC or MCC?
CMS lists R57.8 as an MCC (major complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It carries this status only when the patient is discharged alive. It does not count when the principal diagnosis is one of the 48 closely related codes in its exclusion list.
Can R57.8 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the other shock is established, that condition takes the principal position instead.
What HCC is R57.8?
R57.8 (other 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 2027. 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 R57.8 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, R57.8 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.
