ICD-10 Code I47.10 – Supraventricular tachycardia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I47.10 – Supraventricular tachycardia, unspecified
What it is
I47.10 identifies supraventricular tachycardia that is documented but not further specified. Use it when the record shows a rapid heart rhythm starting above the ventricles, and the exact type is not named.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see a sudden fast regular heartbeat, palpitations, dizziness, chest discomfort, or shortness of breath, with rhythm evidence supporting a supraventricular origin.
When to use this code
Use this code when the provider documents supraventricular tachycardia without naming a subtype such as AVNRT, AVRT, or atrial tachycardia. It also fits when the note confirms SVT but does not provide enough detail for a more specific code.
If the encounter is for evaluation, monitoring, or follow-up of unspecified SVT, this code may apply. Check documentation to confirm the rhythm diagnosis and avoid coding based only on symptoms like palpitations.
Do not use for
Do not use this code when the rhythm is more specifically documented as atrial fibrillation, atrial flutter, sinus tachycardia, or a named supraventricular arrhythmia. Check documentation for the exact diagnosis.
Coding tip
Code the most specific arrhythmia documented; if the subtype is missing, I47.10 is appropriate.