ICD-10 Code
International Classification of Diseases, 10th Revision
Sep 21, 2017
  ICD-10 Code for Cardiac arrhythmia, unspecified I49.9

I49.9 is a valid1 ICD 10 diagnosis code.

I49.9 is valid for submission for HIPAA-covered transactions.

Chapter 9 Diseases of the circulatory system (I00-I99)
Section I30-I52 Other forms of heart disease (I30-I52)
Category I49 Other cardiac arrhythmias

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 No additional coding requirements necessary.
Inclusion Term
  • Arrhythmia (cardiac) NOS
See also ICD 10 code for

Related Terms to “Cardiac arrhythmia, unspecified”

  • Action, heart
    • disorder - I49.9
    • irregular - I49.9
  • Arrhythmia(auricle)(cardiac)(juvenile)(nodal) (reflex)(sinus)(supraventricular)(transitory)(ventricle) - I49.9
  • Disorder(of)See also Disease
    • heart action - I49.9
  • Disturbance(s)See also Disease
    • rhythm, heart - I49.9
  • Dysrhythmia
    • cardiac - I49.9
  • Irregular, irregularity
    • action, heart - I49.9
  • Rhythm
    • disorder - I49.9
    • escape - I49.9
    • heart, abnormal - I49.9
See the 2017 ICD-10-CM Coding Guidelines.

Questions related to I49.9 Cardiac arrhythmia, unspecified

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.