ICD-10-CM 2027
ICD-10 code for Fast pulse
From the official ICD-10-CM alphabetic index entry “Fast pulse”. Page updated September 29, 2026.
About coding Fast pulse
The ICD-10-CM code for Fast pulse is R00.0 (Tachycardia, unspecified).
Within R00, choose R00.0 (Tachycardia, unspecified) only when documentation doesn't support a more specific option: bradycardia, unspecified (R00.1), Palpitations (R00.2), other abnormalities of heart beat (R00.8) and unspecified abnormalities of heart beat (R00.9).
Don't report R00.0 together with the conditions in its Excludes1 note: inappropriate sinus tachycardia, so stated (I47.11), neonatal tachycardia (P29.11) and paroxysmal tachycardia (I47.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for R00.0)
Common questions about Fast pulse ICD-10 codes
What is the ICD-10 code for Fast pulse?
- R00.0 — Tachycardia, unspecified.
Is R00.0 billable?
- Yes. R00.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R00.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R00.0 as a principal diagnosis.
Is R00.0 a CC or MCC?
- No. R00.0 is neither a CC nor an MCC under MS-DRG v44.0.