ICD-10 code for adrenal apoplexia

The ICD-10-CM code for adrenal apoplexia is A39.1 (Waterhouse-Friderichsen syndrome).

Within A39 (meningococcal infection), A39.1 is specifically for Waterhouse-Friderichsen syndrome. Related codes cover meningococcal meningitis (A39.0), acute meningococcemia (A39.2), chronic meningococcemia (A39.3), meningococcemia, unspecified (A39.4), meningococcal heart disease (A39.5), other meningococcal infections (A39.8) and unspecified (A39.9).

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" 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 870 (Septicemia or Severe Sepsis with MV >96 Hours, relative weight 6.9408), DRG 871 (Septicemia or Severe Sepsis without MV >96 Hours with MCC, relative weight 1.932) and DRG 872 (Septicemia or Severe Sepsis without MV >96 Hours without MCC, relative weight 1.0066), 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.