2027 ICD-10-CM Diagnosis Code R01.0Benign and innocent cardiac murmurs

ICD-10-CM Codes›R00–R99›R00-R09›R01

ICD-10-CM R01.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

R01.0 is a billable ICD-10-CM diagnosis code for benign and innocent cardiac murmurs. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 306 through 307. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as functional heart murmur. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Circulatory signs and symptoms.

Code Identity

ICD-10-CM Code
R01.0
Billable Status
Yes — Valid for Submission
Code Describes
Benign and innocent cardiac murmurs
Short Description
Benign and innocent cardiac murmurs
Same as the full description in the CMS dataset.
Parent Code
R01
Cardiac murmurs and other cardiac sounds

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR00-R09Symptoms and signs involving the circulatory and respiratory systems
CategoryR01Cardiac murmurs and other cardiac sounds
This CodeR01.0Benign and innocent cardiac murmurs

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Functional heart murmur
  • Neonatal innocent cardiac murmur
  • Venous hum

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to R01.0: its own notes plus those printed at R01 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Functional cardiac murmur

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From R01 Cardiac murmurs and other cardiac sounds applies to 3 codes
  • cardiac murmurs and sounds originating in the perinatal period (P29.8)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • 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)

Notes

General instructions on how these codes are used.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • 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.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM012
Circulatory signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Congenital Heart Defects

Congenital heart defects (CHDs) are problems with the structure of the heart. "Congenital" means that that the problems are present at birth. These defects happen when a fetus's heart doesn't develop normally during pregnancy. Congenital heart defects are the most common type of birth defect.

The full article covers:

  • What are congenital heart defects?
  • What causes congenital heart defects?
  • Who is more likely to have a baby with a congenital heart defect?
  • What are the symptoms of congenital heart defects?
  • What other problems do congenital heart defects cause?
  • How are congenital heart defects diagnosed?
  • What are the treatments for congenital heart defects?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert R01.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
785.2 Cardiac murmurs NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About R01.0Overview

What is the ICD-10 code for benign and innocent cardiac murmurs?

The ICD-10-CM code for benign and innocent cardiac murmurs is R01.0 (sometimes written as R010). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is R01.0 (Cardiac murmurs and other cardiac sounds) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign and innocent cardiac murmurs on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does R01.0 group to?

When benign and innocent cardiac murmurs is the principal diagnosis on an inpatient stay, it groups to MS-DRG 306, 307, with relative weights from 0.9146 to 1.5457 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R01.0 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the benign and innocent cardiac murmurs is established, that condition takes the principal position instead.

Can R01.0 be reported with P29.8?

Not as a rule. The Excludes1 note at R01, which applies to R01.0, lists "cardiac murmurs and sounds originating in the perinatal period (P29.8)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).