2026 ICD-10-CM Diagnosis Code D15.1Benign neoplasm of heart

ICD-10-CM Codes›C00–D49›D10-D36›D15

ICD-10-CM D15.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

D15.1 is a billable ICD-10-CM diagnosis code for benign neoplasm of heart. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 314 through 316. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Benign neoplasms.

Code Identity

ICD-10-CM Code
D15.1
Billable Status
Yes — Valid for Submission
Code Describes
Benign neoplasm of heart
Short Description
Benign neoplasm of heart
Same as the full description in the CMS dataset.
Parent Code
D15
Benign neoplasm of other and unspecified intrathoracic organs

Code Classification

ChapterC00–D49Neoplasms
SectionD10-D36Benign neoplasms, except benign neuroendocrine tumors
CategoryD15Benign neoplasm of other and unspecified intrathoracic organs
This CodeD15.1Benign neoplasm of heart

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Atrial myxoma
  • Benign neoplasm of endocardium
  • Benign neoplasm of epicardium
  • Benign neoplasm of heart
  • Benign neoplasm of myocardium
  • Benign neoplasm of pericardium
  • Congenital rhabdomyoma of heart
  • Elastofibroma
  • Embolism due to cardiac myxoma
  • Familial atrial myxoma
  • Left ventricular mass
  • Myxoma of heart
  • Neoplasm of endocardium
  • Neoplasm of epicardium
  • Neoplasm of myocardium
  • Papillary fibroelastoma of heart
  • Papillary fibroelastoma of left ventricle
  • Papillary fibroelastoma of papillary muscle
  • Papillary fibroelastoma of right ventricle
  • Rhabdomyoma
  • Right ventricular mass

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • benign neoplasm of great vessels D21.3

Clinical ClassificationClinical

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

CCSR NEO073
Benign neoplasms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Endocardium

    the innermost layer of the heart, comprised of endothelial cells.

  • Myocardial Stunning

    prolonged dysfunction of the myocardium after a brief episode of severe ischemia, with gradual return of contractile activity.

  • Myocardium

    the muscle tissue of the heart. it is composed of striated, involuntary muscle cells (myocytes, cardiac) connected to form the contractile pump to generate blood flow.

  • Pericardial Fluid

    watery fluid produced in the serous and visceral pericardium surrounding the surface of the heart.

  • Pericardium

    a conical fibro-serous sac surrounding the heart and the roots of the great vessels (aorta; venae cavae; pulmonary artery). pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. the latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.

  • Rhabdomyoma

    a benign tumor derived from striated muscle. it is extremely rare, generally occurring in the tongue, neck muscles, larynx, uvula, nasal cavity, axilla, vulva, and heart. these tumors are treated by simple excision. (dorland, 27th ed; devita jr et al., cancer: principles & practice of oncology, 3d ed, p1354)

Table of NeoplasmsClinical

Anatomical sites in the Table of Neoplasms that reference this code family.

SiteMalig.
Primary		Malig.
Secondary		Ca
in situ		BenignUncertainUnspec.
atrium, cardiacC38.0C79.89–D15.1D48.7D49.89
endocardiumC38.0C79.89–D15.1D48.7D49.89
epicardiumC38.0C79.89–D15.1D48.7D49.89
heartC38.0C79.89–D15.1D48.7D49.89
myocardiumC38.0C79.89–D15.1D48.7D49.89
myopericardiumC38.0C79.89–D15.1D48.7D49.89
pericardiumC38.0C79.89–D15.1D48.7D49.89
ventricle (cerebral) (floor) (lateral) (third) › cardiac (left) (right)C38.0C79.89–D15.1D48.7D49.89

Patient EducationClinical

Benign Tumors

Tumors are abnormal growths in your body. They can be either benign or malignant. Benign tumors aren't cancer. Malignant ones are. Benign tumors grow only in one place. They cannot spread or invade other parts of your body. Even so, they can be dangerous if they press on vital organs, such as your brain.

Read the full article at MedlinePlus

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

Convert D15.1 to ICD-9-CMHistory

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

ICD-9-CM
212.7 Benign neoplasm heart
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About D15.1Overview

Is D15.1 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report benign neoplasm of heart on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does D15.1 group to?

When benign neoplasm of heart is the principal diagnosis on an inpatient stay, it groups to MS-DRG 314, 315, 316, with relative weights from 0.6821 to 2.0852 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of D15.1?

Under the General Equivalence Mappings, benign neoplasm of heart converts to ICD-9-CM 212.7 (benign neoplasm heart). The mapping is a direct match.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.