MCMedicalCodingSoftware
R55

R55: Syncope and collapse

Billable / specific codeICD-10-CM

R55 is a billable, specific ICD-10-CM code for syncope and collapse. It is valid for submission on a claim.

Check R55 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • cardiogenic shock (R57.0)
  • carotid sinus syncope (G90.01)
  • heat syncope (T67.1)
  • neurocirculatory asthenia (F45.8)
  • neurogenic orthostatic hypotension (G90.3)
  • orthostatic hypotension (I95.1)
  • postprocedural shock (T81.1-)
  • psychogenic syncope (F48.8)
  • shock NOS (R57.9)
  • shock complicating or following abortion or ectopic or molar pregnancy (O00-O07, O08.3)
  • shock complicating or following labor and delivery (O75.1)
  • Stokes-Adams attack (I45.9)
  • unconsciousness NOS (R40.2-)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Blackout
  • Fainting
  • Vasovagal attack

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

R55 is named in 43 Medicare coverage policies: 43 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
  • A54954Billing and Coding: Autonomic Function Tests
  • A56423Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing
  • A56476Billing and Coding: Cardiac Radionuclide Imaging

Alphabetic index entries that lead here

  • Blackout
  • Collapse
  • Fainting(fit)
  • Near-syncope
  • Pre-syncope
  • Syncope(near) (pre-)
  • Vasovagal attack(paroxysmal)
  • Arrhythmia›vagal
  • Attack, attacks›drop NEC
  • Attack, attacks›syncope
  • Attack, attacks›unconsciousness
  • Attack, attacks›vasomotor

Code history

Unchanged in every release from FY2024 to FY2027.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.