`A39.1` Waterhouse-Friderichsen syndrome

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Risk adjustment (HCC)

CMS-HCC V22: HCC 23 — Other Significant Endocrine and Metabolic Disorders
RxHCC V08: HCC 43 — Pituitary, Adrenal Gland, and Other Endocrine and Metabolic Disorders
ESRD V24: HCC 23

Defines the logic of DRG(s) 791 in MDC 15.

Type 1 Excludes: E27.1 Primary adrenocortical insufficiency ("Waterhouse-Friderichsen syndrome (A39.1)")
Type 1 Excludes: E27.4 Other and unspecified adrenocortical insufficiency ("Waterhouse-Friderichsen syndrome (A39.1)")
Type 1 Excludes: E35 Disorders of endocrine glands in diseases classified elsewhere ("meningococcal hemorrhagic adrenalitis (A39.1)")
Type 1 Excludes: E35 Disorders of endocrine glands in diseases classified elsewhere ("Waterhouse-Friderichsen syndrome (A39.1)")

Adrenalitis, adrenitis › meningococcal, hemorrhagic
Apoplexia, apoplexy, apoplectic › adrenal
Disease, diseased › Waterhouse-Friderichsen
Friderichsen-Waterhouse syndrome or disease
Infection, infected, infective (opportunistic) › meningococcal › adrenals
Meningococcus, meningococcal › adrenalitis, hemorrhagic
Sepsis (generalized) (unspecified organism) › adrenal hemorrhage syndrome (meningococcal)
Syndrome › adrenal › hemorrhage (meningococcal)
Syndrome › adrenal › meningococcic
Syndrome › Friderichsen-Waterhouse
Syndrome › septicemic adrenal hemorrhage
Syndrome › Waterhouse (-Friderichsen)
Waterhouse (-Friderichsen) syndrome or disease (meningococcal)