2022

  1. ICD-10-CM Codes
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  2. I00-I99 Diseases of the circulatory system
    3. ›
  3. I30-I5A Other forms of heart disease
    4. ›
  4. I49- Other cardiac arrhythmias
    5. ›
  5. 2022 ICD-10-CM Diagnosis Code I49

2022 ICD-10-CM Diagnosis Code I49

Other cardiac arrhythmias

    2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
  • I49 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2022 edition of ICD-10-CM I49 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of I49 - other international versions of ICD-10 I49 may differ.
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • cardiac arrhythmia complicating:
  • abortion or ectopic or molar pregnancy (
    ICD-10-CM Diagnosis Code O00

    Ectopic pregnancy

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Includes
    • ruptured ectopic pregnancy
    Use Additional
    • code from category O08 to identify any associated complication
    O00
    -
    ICD-10-CM Diagnosis Code O07

    Failed attempted termination of pregnancy

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Includes
    • failure of attempted induction of termination of pregnancy
    • incomplete elective abortion
    Type 1 Excludes
    • incomplete spontaneous abortion (O03.0-)
    O07
    ,
    ICD-10-CM Diagnosis Code O08.8

    Other complications following an ectopic and molar pregnancy

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    O08.8
    )
  • obstetric surgery and procedures (
    ICD-10-CM Diagnosis Code O75.4

    Other complications of obstetric surgery and procedures

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Cardiac arrest following obstetric surgery or procedures
    • Cardiac failure following obstetric surgery or procedures
    • Cerebral anoxia following obstetric surgery or procedures
    • Pulmonary edema following obstetric surgery or procedures
    Type 2 Excludes
    • complications of anesthesia during labor and delivery (O74.-)
    • disruption of obstetrical (surgical) wound (O90.0-O90.1)
    • hematoma of obstetrical (surgical) wound (O90.2)
    • infection of obstetrical (surgical) wound (O86.0-)
    Use Additional
    • code to identify specific complication
    O75.4
    )
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I49. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • neonatal dysrhythmia (
    ICD-10-CM Diagnosis Code P29.1

    Neonatal cardiac dysrhythmia

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    P29.1-
    )
  • sinoatrial bradycardia (
    ICD-10-CM Diagnosis Code R00.1

    Bradycardia, unspecified

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Sinoatrial bradycardia
    • Sinus bradycardia
    • Slow heart beat
    • Vagal bradycardia
    Type 1 Excludes
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    R00.1
    )
  • sinus bradycardia (
    ICD-10-CM Diagnosis Code R00.1

    Bradycardia, unspecified

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Sinoatrial bradycardia
    • Sinus bradycardia
    • Slow heart beat
    • Vagal bradycardia
    Type 1 Excludes
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    R00.1
    )
  • vagal bradycardia (
    ICD-10-CM Diagnosis Code R00.1

    Bradycardia, unspecified

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Sinoatrial bradycardia
    • Sinus bradycardia
    • Slow heart beat
    • Vagal bradycardia
    Type 1 Excludes
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    R00.1
    )
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (I49) and the excluded code together.
  • bradycardia NOS (
    ICD-10-CM Diagnosis Code R00.1

    Bradycardia, unspecified

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Sinoatrial bradycardia
    • Sinus bradycardia
    • Slow heart beat
    • Vagal bradycardia
    Type 1 Excludes
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    R00.1
    )
The following code(s) above I49 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I49:
  • I00-I99
    2022 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    • systemic connective tissue disorders (M30-M36)
    • transient cerebral ischemic attacks and related syndromes (G45.-)
    Diseases of the circulatory system
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
ICD-10-CM Codes Adjacent To I49
I48.11 Longstanding persistent atrial fibrillation
I48.19 Other persistent atrial fibrillation
I48.2 Chronic atrial fibrillation
I48.20 …… unspecified
I48.21 Permanent atrial fibrillation
I48.3 Typical atrial flutter
I48.4 Atypical atrial flutter
I48.9 Unspecified atrial fibrillation and atrial flutter
I48.91 Unspecified atrial fibrillation
I48.92 Unspecified atrial flutter
I49 Other cardiac arrhythmias
I49.0 Ventricular fibrillation and flutter
I49.01 Ventricular fibrillation
I49.02 Ventricular flutter
I49.1 Atrial premature depolarization
I49.2 Junctional premature depolarization
I49.3 Ventricular premature depolarization
I49.4 Other and unspecified premature depolarization
I49.40 Unspecified premature depolarization
I49.49 Other premature depolarization
I49.5 Sick sinus syndrome

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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