R57.9Shock, unspecified

R57.9 is the ICD-10-CM diagnosis code for shock, unspecified. It belongs to category R57 (shock, not elsewhere classified), block R50-R69 (general symptoms and signs) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within R57, choose R57.9 (Shock, unspecified) only when documentation doesn't support a more specific option: cardiogenic shock (R57.0), Hypovolemic shock (R57.1) and other shock (R57.8).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 291 (Heart Failure and Shock with MCC, relative weight 1.2685), DRG 292 (Heart Failure and Shock with CC, relative weight 0.8616), DRG 293 (Heart Failure and Shock without CC/MCC, relative weight 0.5462), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 05 (Diseases and Disorders of the Circulatory System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 785.50 (shock, unspecified).