R55 — Syncope and collapse
Part of Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified , block General symptoms and signs (R50-R69) .
Official Notes
Inclusion Terms
Blackout
Inclusion Terms
Fainting
Inclusion Terms
Vasovagal attack
Excludes1
cardiogenic shock ( R57.0 )
Excludes1
carotid sinus syncope ( G90.01 )
Excludes1
heat syncope ( T67.1 )
Excludes1
neurocirculatory asthenia ( F45.8 )
Excludes1
neurogenic orthostatic hypotension ( G90.3 )
Excludes1
orthostatic hypotension ( I95.1 )
Excludes1
postprocedural shock ( T81.1- )
Excludes1
psychogenic syncope ( F48.8 )
Excludes1
shock NOS ( R57.9 )
Excludes1
shock complicating or following abortion or ectopic or molar pregnancy (O00-O07, O08.3 )
Excludes1
shock complicating or following labor and delivery ( O75.1 )
Excludes1
Stokes-Adams attack ( I45.9 )
Excludes1
unconsciousness NOS ( R40.2- )
Child Codes
R55 has no child codes in the FY 2027 release -- it is used on its own.
Referenced By
Official notes on these codes cite R55.
FY 2027 effective October 1, 2026 · CDC NCHS and CMS