R00.0

Billable

ChapterR00–R99

Ranksubcategory

Official Description

Tachycardia, unspecified

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings (R00-R99).

Instructional Notes

Includes

Rapid heart beat
Sinoauricular tachycardia NOS
Sinus [sinusal] tachycardia NOS

Excludes1(Not coded here)

inappropriate sinus tachycardia, so stated (I47.11)
neonatal tachycardia (P29.11)
paroxysmal tachycardia (I47.-)

General instructions are available for the parent sections:

View CH18 Notes View R00 Notes

Clinical Hierarchy

CH18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

R00-R09Symptoms and signs involving the circulatory and respiratory systems (R00-R09)

R00Abnormalities of heart beat

R00.0Tachycardia, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to R00.0:

categoryR00

Abnormalities of heart beat

View context instructions

chapterCH18

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to R00.0. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

9 raw paths

Fast pulse1 unique routes

Direct index entry→R00.0

Heart beat1 unique routes

rapid→R00.0

Pulse2 unique routes

fast→R00.0

rapid→R00.0

Rapid1 unique routes

heart (beat)→R00.0

Sinus1 unique routes

tachycardia→R00.0