I47Paroxysmal tachycardia

I47 is the ICD-10-CM diagnosis code for paroxysmal tachycardia. It belongs to block I30-I5A (other forms of heart disease) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: I47.0 (arrhythmia), I47.1 (tachycardia), I47.2 (tachycardia) and I47.9 (unspecified).

Don't report I47 together with the conditions in its Excludes1 note: tachycardia NOS (R00.0), sinoauricular tachycardia NOS (R00.0) and sinus [sinusal] tachycardia NOS (R00.0).

Code first tachycardia complicating: abortion or ectopic or molar pregnancy (O00-O07, O08.8) and obstetric surgery and procedures (O75.4).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.