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A39.1

Waterhouse-Friderichsen syndrome

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 5 never code together
A00-B99chapter
Excludes1
  • certain localized infections - see body system-related chapters
Excludes2
  • carrier or suspected carrier of infectious disease (Z22.-)Z22.-
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)O98.-
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)P35-P39
  • influenza and other acute respiratory infections (J00-J22)J00-J22

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 4
A39.1code
Inclusion terms
  • Meningococcal hemorrhagic adrenalitis
  • Meningococcic adrenal syndrome
A00-B99chapter
Includes
  • diseases generally recognized as communicable or transmissible
Use additional code
  • code to identify resistance to antimicrobial drugs (Z16.-)Z16.-
Index entries leading here 9
  • Apoplexia, apoplexy, apoplectic
  • Syndrome — see also Disease
    • adrenal
      • meningococcic A39.1
      • hemorrhage (meningococcal) A39.1
    • Friderichsen-Waterhouse A39.1
    • septicemic adrenal hemorrhage A39.1
    • Waterhouse (-Friderichsen) A39.1
  • Sepsis (generalized) (unspecified organism) A41.9
    • adrenal hemorrhage syndrome (meningococcal) A39.1
  • Adrenalitis, adrenitis E27.8
    • meningococcal, hemorrhagic A39.1
  • Meningococcus, meningococcal A39.9
    • adrenalitis, hemorrhagic A39.1
  • Infection, infected, infective (opportunistic) B99.9
  • Disease, diseased — see also Syndrome
    • Waterhouse-Friderichsen A39.1
  • Friderichsen-Waterhouse syndrome or disease A39.1
  • Waterhouse (-Friderichsen) syndrome or disease (meningococcal) A39.1
Alongside this code 7 same parent — A39
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC23 ESRD21HCC23 ESRD24HCC23 RX08HCC43

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
A39
Block
A30-A49
Siblings
7

Present FY2024–FY2027.