2019 ICD-10-CM Diagnosis Code R00.1

Bradycardia, unspecified

    2016 2017 2018 2019 Billable/Specific Code
  • R00.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM R00.1 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of R00.1 - other international versions of ICD-10 R00.1 may differ.
Applicable To
  • Sinoatrial bradycardia
  • Sinus bradycardia
  • Slow heart beat
  • Vagal bradycardia
Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the 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.
  • code for adverse effect, if applicable, to identify drug (T36-T50
    ICD-10-CM Range T36-T50

    Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances

    Code First
    • , for adverse effects, the nature of the adverse effect, such as:
    • adverse effect NOS (T88.7)
    • aspirin gastritis (K29.-)
    • blood disorders (D56-D76)
    • contact dermatitis (L23-L25)
    • dermatitis due to substances taken internally (L27.-)
    • nephropathy (N14.0-N14.2)
    Includes
    • adverse effect of correct substance properly administered
    • poisoning by overdose of substance
    • poisoning by wrong substance given or taken in error
    • underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
    Note
    • The drug giving rise to the adverse effect should be identified by use of codes from categories T36-T50 with fifth or sixth character 5.
    Type 1 Excludes
    • toxic reaction to local anesthesia in pregnancy (O29.3-)
    Type 2 Excludes
    • abuse and dependence of psychoactive substances (F10-F19)
    • abuse of non-dependence-producing substances (F55.-)
    • drug reaction and poisoning affecting newborn (P00-P96)
    • pathological drug intoxication (inebriation) (F10-F19)
    Use Additional
    • code(s) to specify:
    • manifestations of poisoning
    • underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
    • underdosing of medication regimen (Z91.12-, Z91.13-)
    • T36 Poisoning by, adverse effect of and unde...
    • T37 Poisoning by, adverse effect of and unde...
    • T38 Poisoning by, adverse effect of and unde...
    • T39 Poisoning by, adverse effect of and unde...
    • T40 Poisoning by, adverse effect of and unde...
    • T41 Poisoning by, adverse effect of and unde...
    • T42 Poisoning by, adverse effect of and unde...
    • T43 Poisoning by, adverse effect of and unde...
    • T44 Poisoning by, adverse effect of and unde...
    • T45 Poisoning by, adverse effect of and unde...
    • T46 Poisoning by, adverse effect of and unde...
    • T47 Poisoning by, adverse effect of and unde...
    • T48 Poisoning by, adverse effect of and unde...
    • T49 Poisoning by, adverse effect of and unde...
    • T50 Poisoning by, adverse effect of and unde...
    with fifth or sixth character 5)
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 R00.1. 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 bradycardia (
    ICD-10-CM Diagnosis Code P29.12

    Neonatal bradycardia

      2016 2017 2018 2019 Billable/Specific Code Code on Newborn Record
    P29.12
    )
The following code(s) above R00.1 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 R00.1:
  • R00-R99
    2019 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
  • R00
    ICD-10-CM Diagnosis Code R00

    Abnormalities of heart beat

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • abnormalities originating in the perinatal period (P29.1-)
    Type 2 Excludes
    • specified arrhythmias (I47-I49)
    Abnormalities of heart beat
Approximate Synonyms
  • Atrioventricular (av) bradycardia (slow heart beat)
  • Av-junctional (nodal) bradycardia
  • Bradycardia
  • Bradycardia (slow heart rate)
  • Bradycardia, drug induced, in therapeutic use
  • Drug-induced bradycardia
  • Persistent sinus bradycardia
  • Sinus bradycardia
  • Sinus bradycardia (slow heart beat)
  • Sinus bradycardia, persistent
Clinical Information
  • A disorder characterized by a dysrhythmia with a heart rate less than 60 beats per minute that originates in the sinus node.
  • A heart rate of less than 60 beats per minute, with its origin in the sinus node.
  • An abnormally slow heartbeat; as applied in adult medicine, it is generally defined as a heart rate of under 60 beats per minute.
  • Cardiac arrhythmias that are characterized by excessively slow heart rate, usually below 50 beats per minute in human adults. They can be classified broadly into sinoatrial node dysfunction and atrioventricular block.
  • Excessive slowness in the action of the heart, usually with a heart rate below 60 beats per minute.
  • Non-sinus origin slow heart rate.
ICD-10-CM R00.1 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 308 Cardiac arrhythmia and conduction disorders with mcc
  • 309 Cardiac arrhythmia and conduction disorders with cc
  • 310 Cardiac arrhythmia and conduction disorders without cc/mcc

Convert R00.1 to ICD-9-CM

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
Code annotations containing back-references to R00.1:
  • Type 1 Excludes: I49
    , I49
    , I49
    ICD-10-CM Diagnosis Code I49

    Other cardiac arrhythmias

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    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
    ICD-10-CM Diagnosis Code I49

    Other cardiac arrhythmias

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    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
    ICD-10-CM Diagnosis Code I49

    Other cardiac arrhythmias

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    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
  • Type 2 Excludes: I49
    ICD-10-CM Diagnosis Code I49

    Other cardiac arrhythmias

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    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

Diagnosis Index entries containing back-references to R00.1:
  • Brachycardia R00.1
  • Bradycardia (sinoatrial) (sinus) (vagal) R00.1
  • Heart beat
    • slow R00.1
  • Sinus - see also Fistula
    • bradycardia R00.1
  • Slow
    • heart R00.1 (beat)
  • Syncope (near) (pre-) R55
    ICD-10-CM Diagnosis Code R55

    Syncope and collapse

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Blackout
    • Fainting
    • Vasovagal attack
    Type 1 Excludes
    • cardiogenic shock (R57.0)
    • carotid sinus syncope (G90.01)
    • heat syncope (T67.1)
    • neurocirculatory asthenia (F45.8)
    • neurogenic orthostatic hypotension (G90.3)
    • orthostatic hypotension (I95.1)
    • postprocedural shock (T81.1-)
    • psychogenic syncope (F48.8)
    • shock NOS (R57.9)
    • shock complicating or following abortion or ectopic or molar pregnancy (O00-O07, O08.3)
    • shock complicating or following labor and delivery (O75.1)
    • Stokes-Adams attack (I45.9)
    • unconsciousness NOS (R40.2-)
    • bradycardia R00.1

ICD-10-CM Codes Adjacent To R00.1
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
R03.0 Elevated blood-pressure reading, without diagnosis of hypertension
R03.1 Nonspecific low blood-pressure reading

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