R00.0 ICD-10-CM Code: Tachycardia, unspecified
R00.0 is the billable ICD-10-CM code for “Tachycardia, unspecified” in the FY 2027 U.S. code set, effective Oct 1, 2026.
Official description
R00.0Tachycardia, unspecified
ICD-10-CM diagnosis code · United States clinical modification
Where R00.0 sits
- 1
Chapter 18
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
- 2
Section
Symptoms and signs involving the circulatory and respiratory systems (R00-R09)
- 3
Category R00
Abnormalities of heart beat
- 4
Code R00.0
Tachycardia, unspecified
Notes for this code
Inclusion terms
- Rapid heart beat
- Sinoauricular tachycardia NOS
- Sinus [sinusal] tachycardia NOS
Code first
No “code first” instruction is listed for R00.0.
Use additional code
No “use additional code” instruction is listed for R00.0.
Excludes1
Conditions that should not be reported together with this code.
- inappropriate sinus tachycardia, so stated (I47.11)
- neonatal tachycardia (P29.11)
- paroxysmal tachycardia (I47.-)
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for R00.0.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code R00.0 mean?
R00.0 is the FY 2027 U.S. ICD-10-CM code for “Tachycardia, unspecified.”
Is R00.0 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, R00.0 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is R00.0 located in ICD-10-CM?
R00.0 is listed in Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), within Symptoms and signs involving the circulatory and respiratory systems (R00-R09) (R00–R09), under category R00, Abnormalities of heart beat.
What coding notes are listed for R00.0?
Its listed inclusion terms are Rapid heart beat; Sinoauricular tachycardia NOS; Sinus [sinusal] tachycardia NOS. No code-first instruction is listed. Excludes1 notes: inappropriate sinus tachycardia, so stated (I47.11); neonatal tachycardia (P29.11); paroxysmal tachycardia (I47.-). No Excludes2 note is listed.