ICD-10 Code I47.11 – Inappropriate sinus tachycardia, so stated (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I47.11 – Inappropriate sinus tachycardia, so stated
What it is
I47.11 identifies inappropriate sinus tachycardia that is specifically documented as such. It refers to a sinus rhythm that is faster than expected without a clear physiologic reason.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the record describes persistent or recurrent sinus tachycardia with symptoms such as palpitations, dizziness, or exercise intolerance, after other causes are considered.
When to use this code
Use this code when the provider documents inappropriate sinus tachycardia, so stated, or clearly diagnoses it in the assessment. Apply it when the condition is the reason for evaluation, monitoring, or follow-up. Check documentation if the note only says sinus tachycardia without the “inappropriate” qualifier.
Do not use for
Do not use this code for sinus tachycardia due to fever, pain, dehydration, anxiety, or other identified causes. Check documentation if the rhythm is another arrhythmia or if the diagnosis is unspecified.
Coding tip
Code only when the provider explicitly links the tachycardia to inappropriate sinus tachycardia, so stated.