B05.4Measles with intestinal complications

B05.4 is the ICD-10-CM diagnosis code for measles with intestinal complications. It belongs to category B05 (measles), block B00-B09 (viral infections characterized by skin and mucous membrane lesions) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within B05 (measles), B05.4 is specifically for measles with intestinal complications. Related codes cover complicated by encephalitis (B05.0), complicated by meningitis (B05.1), complicated by pneumonia (B05.2), complicated by otitis media (B05.3), with other complications (B05.8) and without complication (B05.9).

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 791 (Prematurity with Major Problems, relative weight 4.1075), DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), DRG 865 (Viral Illness with MCC, relative weight 1.3485) and DRG 866 (Viral Illness without MCC, relative weight 0.8692), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period) and MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), 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 055.79 (measles with other specified complications).