R01.2 ICD-10-CM Code: Other cardiac sounds

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for R01.2 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on R01.2 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for R01.2

MedCoder structured workflow — derived from this code’s own official record

Before you code R01.2

1. Check whether an established diagnosis that explains this sign or symptom is documented. If one is, review whether the documented diagnosis changes the coding pathway: a symptom that is integral to a confirmed diagnosis is not reported separately, while one not routinely associated with it may be. Signs and symptoms are reported when no definitive diagnosis is established (Guidelines I.B.4, I.B.5, I.B.6, I.C.18.b).

   Guide: Symptom code vs confirmed diagnosis →

2. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on R01.2; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

   ReviewR01.0

   See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

3. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with R01.2. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

   See the official tabular notes

Choose the right path

1. Is an established diagnosis that explains this sign or symptom documented?
   Yes → Review whether the documented diagnosis changes the coding pathway: a symptom integral to it is not reported separately.
   No → Continue — the sign or symptom code stands when no definitive diagnosis is established.
2. Does the documentation support a condition named in R01.2’s Excludes1 note?
   Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
   No → Continue.

   ReviewP29.8

Consider R01.2. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement

Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).

Any detail beyond this code’s title

What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

• Excludes1 — check before selecting R01.2(1 note)

  Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with R01.2: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

  CompareP29.8

  See the official tabular notes · Guidelines I.A.12.a

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Indexed Clinical Terms (7)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

• Abnormal, abnormality, abnormalities, heart, sounds NEC
• Dullness, cardiac (decreased) (increased)
• Findings, abnormal, inconclusive, without diagnosis, heart, sounds
• Fremitus, friction, cardiac
• Friction, fremitus, cardiac
• Friction, precordial
• Split, splitting, heart sounds

Don’t confuse R01.2 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of R01.2 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

• P29.8— Excludes1 conflict (Excludes1 — generally not reported together)

  Not coded here — the tabular list excludes this pair for the same encounter.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of cardiac murmurs and sounds originating in the perinatal period moves the case to P29.8; the two are not reported together unless documented as unrelated.

  Full comparison: R01.2 vs P29.8 →

• R01.1— Specificity relationship (Review)

  Overlapping diagnoses in the same category.

  Overlapping codes in the same category — the documentation decides which is the more specific fit.

  What moves you there: A record that documents no more than “Cardiac murmur, unspecified” takes R01.1; specificity in the record moves it back here.

  Full comparison: R01.2 vs R01.1 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Verify Before Coding

• No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 3 MS-DRGs: DRG 314 (MDC 05), DRG 315 (MDC 05), DRG 316 (MDC 05).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):SYM012 — Circulatory signs and symptoms (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Circulatory signs and symptoms).

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, R01.0 — Benign and innocent cardiac murmurs, R01.1 — Cardiac murmur, unspecified, R03.0 — Elevated blood-pressure reading, without diagnosis of hypertension, R03.1 — Nonspecific low blood-pressure reading, R09.89 — Other specified symptoms and signs involving the circulatory and respiratory systems, R58 — Hemorrhage, not elsewhere classified

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Abnormal, abnormality, abnormalities”, “Friction”, “Split, splitting”; these codes share that main term but sit in a different category of the Tabular List.

Q97.8 — Other specified sex chromosome abnormalities, female phenotype (chromosome, chromosomal, sex, female phenotype, specified NEC), Q97.9 — Sex chromosome abnormality, female phenotype, unspecified (chromosome, chromosomal, sex, female phenotype), Q98.6 — Male with structurally abnormal sex chromosome (chromosome, chromosomal, sex, structural male), Q98.8 — Other specified sex chromosome abnormalities, male phenotype (chromosome, chromosomal, sex, male phenotype, specified NEC), Q98.9 — Sex chromosome abnormality, male phenotype, unspecified (chromosome, chromosomal, sex, male phenotype), Q99.8 — Other specified chromosome abnormalities (chromosome, chromosomal, sex), Q99.9 — Chromosomal abnormality, unspecified (autosomes), R00.2 — Palpitations (pulsations in neck), R00.8 — Other abnormalities of heart beat (heart, rate, specified NEC), R00.9 — Unspecified abnormalities of heart beat (heart, rate), R03.0 — Elevated blood-pressure reading, without diagnosis of hypertension (blood pressure, elevated), R03.1 — Nonspecific low blood-pressure reading (blood pressure, low reading), R06.9 — Unspecified abnormalities of breathing (breathing), R09.3 — Abnormal sputum (sputum), R09.89 — Other specified symptoms and signs involving the circulatory and respiratory systems (sounds, chest), R19.11 — Absent bowel sounds (bowel sounds, absent), R19.12 — Hyperactive bowel sounds (bowel sounds, hyperactive), R19.15 — Other abnormal bowel sounds (bowel sounds), R19.5 — Other fecal abnormalities (stool), R25.0 — Abnormal head movements (head movement), +284 more

Contextual Map

Every relationship of R01.2 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

• R00-R99 — Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) (R00-R99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• R00-R09 — Symptoms and signs involving the circulatory and respiratory systems[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Clinical classification (CCSR)

• SYM012 — Circulatory signs and symptoms[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• DRG 314 — OTHER CIRCULATORY SYSTEM DIAGNOSES WITH MCC[MS-DRG]: “OTHER CIRCULATORY SYSTEM DIAGNOSES WITH MCC (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 315 — OTHER CIRCULATORY SYSTEM DIAGNOSES WITH CC[MS-DRG]: “OTHER CIRCULATORY SYSTEM DIAGNOSES WITH CC (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 316 — OTHER CIRCULATORY SYSTEM DIAGNOSES WITHOUT CC/MCC[MS-DRG]: “OTHER CIRCULATORY SYSTEM DIAGNOSES WITHOUT CC/MCC (MDC 05)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

• MDC 05 — Diseases and Disorders of the Circulatory System[MDC crossing]: “Diseases and Disorders of the Circulatory System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 17,209 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

• Abnormal, abnormality, abnormalities, heart, sounds NEC[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Dullness, cardiac (decreased) (increased)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Findings, abnormal, inconclusive, without diagnosis, heart, sounds[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Fremitus, friction, cardiac[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Friction, fremitus, cardiac[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Friction, precordial[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Split, splitting, heart sounds[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes

• R01 — Cardiac murmurs and other cardiac sounds[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• R01.0 — Benign and innocent cardiac murmurs[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• R01.1 — Cardiac murmur, unspecified[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Change history

• FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data

CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page

Inpatient payment groups Official source data

CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to R01.2 in its code family, with their registry titles.

• R01 — Cardiac murmurs and other cardiac sounds
• R01.0 — Benign and innocent cardiac murmurs
• R01.1 — Cardiac murmur, unspecified

View all codes in the R01 family