R55 — Syncope and collapse
Is R55 billable?
Yes — R55 is billable for FY2027. R55 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. R55 may be submitted for encounters from October 1, 2026 through September 30, 2027.
R55 at a glance
| Code | R55 |
|---|---|
| Description | Syncope and collapse |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does R55 group to?
R55 sits in MDC 05 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 312Syncope and Collapsemedical
How is R55 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to R55. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Blackout
- Collapse
- Fainting (fit)
- Near-syncope
- Pre-syncope
- Syncope (near) (pre-)
- Vasovagal attack (paroxysmal)
- Arrhythmia › vagal (auricle)(cardiac)(juvenile)(nodal)(reflex)(supraventricular)(transitory)(ventricle)
- Attack, attacks › drop NEC
- Attack, attacks › syncope
- Attack, attacks › unconsciousness
- Attack, attacks › vasomotor
Excludes1 — never code together
The conditions below can never be reported together with R55 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- 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 wording in documentation that is classified to R55.
- Blackout
- Fainting
- Vasovagal attack
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R55, but a patient may have both at the same time. When documentation supports it, R55 and the excluded code may both be reported.
How long has R55 existed?
R55 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with R55?
ICD-10-CM declares these codes mutually exclusive with R55 — exactly one of each pair can be correct for a given encounter.