I47 vs R00.0
I47 (Paroxysmal tachycardia) compared with R00.0 (Tachycardia, unspecified), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. I47 carries an Excludes1 note covering R00.0: “tachycardia NOS (R00.0)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. I47 carries an Excludes1 note covering R00.0: “sinoauricular tachycardia NOS (R00.0)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. I47 carries an Excludes1 note covering R00.0: “sinus [sinusal] tachycardia NOS (R00.0)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. R00.0 carries an Excludes1 note covering I47: “paroxysmal tachycardia (I47.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Yes, when both are documented. R00.0 carries an Excludes2 note covering I47: “specified arrhythmias (I47-I49)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| I47Paroxysmal tachycardia | R00.0Tachycardia, unspecified | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Paroxysmal tachycardia is a non-billable ICD-10-CM category code (I47). | Tachycardia, unspecified is a billable ICD-10-CM diagnosis code (R00.0). |
| Includes | — | Rapid heart beat Sinoauricular tachycardia NOS Sinus [sinusal] tachycardia NOS |
| Code first | tachycardia complicating: abortion or ectopic or molar pregnancy (O00-O07, O08.8) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources