Supraventricular Tachycardia ICD-10 Code: I47.10, I47.19 Explained

If you’re looking for the supraventricular tachycardia ICD-10 code, the answer depends on how specifically the condition is documented.

For U.S. ICD-10-CM in 2026, I47.1 is the parent category for supraventricular tachycardia (SVT), but it is not a billable code by itself. The billable codes underneath it are I47.10, I47.11, and I47.19.

The practical breakdown is:

• I47.10 — Supraventricular tachycardia, unspecified
• I47.11 — Inappropriate sinus tachycardia, so stated
• I47.19 — Other supraventricular tachycardia

The correct code should always match the diagnosis documented in the medical record.

What Is the ICD-10 Code for Supraventricular Tachycardia?

For a provider-documented diagnosis of supraventricular tachycardia without a specified subtype, the 2026 billable ICD-10-CM code is:

I47.10 — Supraventricular Tachycardia, Unspecified

I47.10 is used when the medical record establishes SVT but does not identify a more specific type.

For example, documentation that simply states “supraventricular tachycardia” or “SVT” without identifying the underlying rhythm may support I47.10, assuming the documentation establishes the diagnosis.

Is I47.1 Still the Billable SVT Code?

No.

This is one of the most important details when looking up the supraventricular tachycardia ICD-10 code.

I47.1 — Supraventricular tachycardia is the parent category. It is not a billable code by itself in the current U.S. ICD-10-CM classification.

The category is divided into three billable codes:

This change is important because older websites and articles may still list I47.1 as the SVT code without explaining the current child codes.

When Is I47.10 Used?

I47.10 — Supraventricular tachycardia, unspecified is generally used when SVT is documented but the specific type is not identified.

Examples of documentation may include:

• Supraventricular tachycardia
• SVT
• Paroxysmal SVT without a documented specific mechanism

The important point is that coding should be based on the provider’s documentation rather than an assumption about the underlying rhythm.

A coder should not automatically choose a more specific SVT code simply because a particular rhythm seems likely.

When Is I47.19 Used?

I47.19 — Other supraventricular tachycardia applies when a specific SVT type is documented that falls within this category.

Examples include:

• Atrial tachycardia
• Atrioventricular paroxysmal tachycardia
• AV nodal reentrant tachycardia (AVNRT)
• Atrioventricular reentrant tachycardia (AVRT)
• Junctional paroxysmal tachycardia
• Nodal paroxysmal tachycardia

For example, if the medical record specifically documents AVNRT, I47.19 may be appropriate rather than the unspecified I47.10.

The exact code should always be confirmed against the current ICD-10-CM classification and the documentation available for the encounter.

What Is I47.11?

I47.11 — Inappropriate sinus tachycardia, so stated is a separate billable code.

It applies when the provider specifically documents inappropriate sinus tachycardia (IST).

It should not be assigned simply because a patient has an elevated heart rate or ordinary sinus tachycardia.

This distinction matters because sinus tachycardia and supraventricular tachycardia are not interchangeable diagnoses for coding purposes.

SVT vs. Sinus Tachycardia

A fast heart rate does not automatically mean supraventricular tachycardia.

When the documentation describes tachycardia, unspecified, ICD-10-CM uses R00.0 — Tachycardia, unspecified rather than automatically assigning an I47.1x code.

A simplified comparison is:

The documentation of the actual diagnosis is what determines the appropriate coding pathway.

Does Paroxysmal SVT Automatically Mean I47.19?

Not necessarily.

The word “paroxysmal” describes the pattern of episodes. It does not, by itself, establish the specific electrophysiologic mechanism.

If documentation says only “paroxysmal supraventricular tachycardia” without identifying a specific type such as AVNRT or AVRT, the unspecified SVT code I47.10 may be appropriate.

If the provider documents a specific type of SVT, such as AVNRT, AVRT, or atrial tachycardia, I47.19 may apply.

Always code according to the documentation and current ICD-10-CM guidelines.

What About Atrial Fibrillation?

Atrial fibrillation should not simply be coded as generic supraventricular tachycardia.

Atrial fibrillation has its own ICD-10-CM category, I48, with codes that distinguish different forms of atrial fibrillation.

Therefore, if the documentation specifically identifies atrial fibrillation, the appropriate I48.- code should be considered rather than automatically assigning an I47.1x code.

What About Ventricular Tachycardia?

Ventricular tachycardia is different from supraventricular tachycardia.

SVT originates above the ventricles, while ventricular tachycardia originates in the ventricles.

Ventricular tachycardia is classified separately under I47.2 and its applicable child codes.

Therefore, ventricular tachycardia should not be coded as supraventricular tachycardia.

2026 Supraventricular Tachycardia ICD-10 Codes at a Glance

Here is the quick reference:

For most searches asking specifically for the current billable code for unspecified SVT, the answer is I47.10.

Why Do Some Websites Still Say I47.1?

If you find an older website saying that the ICD-10 code for SVT is I47.1, it may be referring to the previous coding structure.

The I47.1 category was expanded into more specific codes beginning with the FY2024 ICD-10-CM update.

That is why current coding references can look different from older articles.

For 2026 U.S. ICD-10-CM, the more specific codes are:

• I47.10
• I47.11
• I47.19

This is an important reason to check the code set applicable to the date of service instead of relying on an outdated coding article.

How to Choose the Correct SVT ICD-10 Code

A simple approach is:

Step 1: Check the documented diagnosis

Determine exactly what the provider documented.

Step 2: Look for a specific SVT subtype

If the record identifies AVNRT, AVRT, atrial tachycardia, or another specified SVT, a more specific code may apply.

Step 3: Check for inappropriate sinus tachycardia

If the provider specifically documents inappropriate sinus tachycardia, use the applicable I47.11 code.

Step 4: Use unspecified SVT when appropriate

If the record establishes SVT but does not identify a specific subtype, I47.10 may be appropriate.

Step 5: Verify the current code set

For actual claims, verify the code against the ICD-10-CM version applicable to the encounter date and follow official coding guidelines and payer requirements.

2026 ICD-10-CM Update

For 2026, the U.S. ICD-10-CM code set is released in annual updates, with an additional April 1 update for applicable encounters.

CMS identifies the April 1, 2026 ICD-10-CM update for encounters from April 1 through September 30, 2026.

Because ICD-10-CM codes can change, coding professionals should always verify the current official code set rather than relying on an old webpage.

Bottom Line

If you’re searching for the supraventricular tachycardia ICD-10 code in 2026, don’t stop at I47.1.

The current U.S. ICD-10-CM structure includes:

• I47.10 — Supraventricular tachycardia, unspecified
• I47.11 — Inappropriate sinus tachycardia, so stated
• I47.19 — Other supraventricular tachycardia

The correct choice depends on what is actually documented.

For unspecified SVT, I47.10 is the key billable code. When a specific SVT type is documented, such as AVNRT or AVRT, I47.19 may apply.

For medical coding and billing, always verify the current official ICD-10-CM code set, applicable coding guidelines, and payer requirements.

Disclaimer: This article is provided for educational and coding-reference purposes only. It does not replace the official ICD-10-CM code set, official coding guidelines, payer instructions, or professional coding advice.

Frequently Asked Questions

What is the ICD-10 code for supraventricular tachycardia?

For 2026 U.S. ICD-10-CM, I47.10 is the billable code for supraventricular tachycardia, unspecified. I47.1 is the parent category rather than a billable child code.

Is I47.1 a billable ICD-10 code?

No. I47.1 is the parent category for supraventricular tachycardia. The applicable billable codes include I47.10, I47.11, and I47.19.

What is I47.10?

I47.10 is supraventricular tachycardia, unspecified. It is used when SVT is documented without a more specific subtype.

What is I47.19?

I47.19 is other supraventricular tachycardia. It includes specified SVT types such as AVNRT, AVRT, atrial tachycardia, and certain junctional or nodal tachycardias.

What is I47.11?

I47.11 is inappropriate sinus tachycardia, so stated. It applies when the provider specifically documents inappropriate sinus tachycardia.

What is the ICD-10 code for paroxysmal SVT?

If the documentation states only paroxysmal SVT without identifying a specific mechanism, I47.10 may be appropriate. If a specific type such as AVNRT or AVRT is documented, I47.19 may apply.

Is sinus tachycardia the same as SVT?

No. Sinus tachycardia and supraventricular tachycardia are different diagnoses. Unspecified or ordinary sinus tachycardia may be coded with R00.0, while specifically documented inappropriate sinus tachycardia uses I47.11.

Is ventricular tachycardia the same as supraventricular tachycardia?

No. Ventricular tachycardia originates in the ventricles and is classified separately from supraventricular tachycardia.

Should I use I47.10 or I47.19?

Use the code supported by the provider’s documentation. I47.10 is for unspecified SVT, while I47.19 applies to specified SVT types that fall within that category. Do not infer a specific rhythm that is not documented. See more