ICD-10-CM Codes
R00-R99
R00-R09
R00-
2023 ICD-10-CM Diagnosis Code R00

2023 ICD-10-CM Diagnosis Code R00

Abnormalities of heart beat

2016

2017

2018

2019

2020

2021

2022

2023

Non-Billable/Non-Specific Code

R00 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2023 edition of ICD-10-CM R00 became effective on October 1, 2022.
This is the American ICD-10-CM version of R00 - other international versions of ICD-10 R00 may differ.

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 R00. 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.

abnormalities originating in the perinatal period (
ICD-10-CM Diagnosis Code P29.1
Neonatal cardiac dysrhythmia
P29.1-
)

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 (R00) and the excluded code together.

specified arrhythmias (
ICD-10-CM Diagnosis Code I47
Paroxysmal tachycardia
Code First
- tachycardia complicating:
- abortion or ectopic or molar pregnancy (O00-O07, O08.8)
- obstetric surgery and procedures (O75.4)
Type 1 Excludes
- tachycardia NOS (R00.0)
- sinoauricular tachycardia NOS (R00.0)
- sinus [sinusal] tachycardia NOS (R00.0)
I47
-
ICD-10-CM Diagnosis Code I49
Other cardiac arrhythmias
Code First
- cardiac arrhythmia complicating:
- abortion or ectopic or molar pregnancy (O00-O07, O08.8)
- obstetric surgery and procedures (O75.4)
Type 1 Excludes
- neonatal dysrhythmia (P29.1-)
- sinoatrial bradycardia (R00.1)
- sinus bradycardia (R00.1)
- vagal bradycardia (R00.1)
Type 2 Excludes
- bradycardia NOS (R00.1)
I49
)

The following code(s) above R00 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 R00:

R00-R99
2023 ICD-10-CM Range R00-R99
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
Note
- This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- The conditions and signs or symptoms included in categories R00-R94 consist of:
- (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- (e) cases in which a more precise diagnosis was not available for any other reason;
- (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Type 2 Excludes
- abnormal findings on antenatal screening of mother (O28.-)
- certain conditions originating in the perinatal period (P04-P96)
- signs and symptoms classified in the body system chapters
- signs and symptoms of breast (N63, N64.5)
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

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
2023 (effective 10/1/2022): No change

ICD-10-CM Codes Adjacent To R00

Q98.6 Male with structurally abnormal sex chromosome

Q98.7 Male with sex chromosome mosaicism

Q98.8 Other specified sex chromosome abnormalities, male phenotype

Q98.9 Sex chromosome abnormality, male phenotype, unspecified

Q99 Other chromosome abnormalities, not elsewhere classified

Q99.0 Chimera 46, XX/46, XY

Q99.1 46, XX true hermaphrodite

Q99.2 Fragile X chromosome

Q99.8 Other specified chromosome abnormalities

Q99.9 Chromosomal abnormality, unspecified

R00 Abnormalities of heart beat

R00.0 Tachycardia, unspecified

R00.1 Bradycardia, unspecified

R00.2 Palpitations

R00.8 Other abnormalities of heart beat

R00.9 Unspecified abnormalities of heart beat

R01 Cardiac murmurs and other cardiac sounds

R01.0 Benign and innocent cardiac murmurs

R01.1 Cardiac murmur, unspecified

R01.2 Other cardiac sounds

R03 Abnormal blood-pressure reading, without diagnosis

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

2023 ICD-10-CM Diagnosis Code R00

Abnormalities of heart beat

Neonatal cardiac dysrhythmia

Paroxysmal tachycardia

Other cardiac arrhythmias

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified