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D24.2 ICD-10-CM Code: Benign neoplasm of left breast

Compare with another code for D24.2Check this code on a claim

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Coding at a Glance

Official instructions
3 inclusion terms · 5 Excludes2

What these terms mean →

Billable · FY2027A valid, specific ICD-10-CM code, reportable for dates of service in FY2027.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too, and is marked with where it comes from.

Excludes2from D24Not included here; may be reported together
  • adenofibrosis of breast (N60.2)
  • benign cyst of breast (N60.-)
  • benign mammary dysplasia (N60.-)
  • benign neoplasm of skin of breast (D22.5, D23.5)

+1 more in Instructions

Includesfrom D24What D24 covers
  • benign neoplasm of connective tissue of breast
  • benign neoplasm of soft parts of breast
  • fibroadenoma of breast

Where it sits Source: CMS/NCHS

Under:Chapter 2: NeoplasmsD10-D36 Benign neoplasms, except benign neuroendocrine tumorsD24 Benign neoplasm of breast

Most relevant related codes MedCoder-derived

Read off the official notes above and this code’s own position in the tabular list. Which to report is a documentation question; Compare shows the two side by side.

CompareCheck ClaimView Related Codes

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v44, Appendix B.

  • MS-DRG 606 — MINOR SKIN DISORDERS WITH MCC (MDC 09)
  • MS-DRG 607 — MINOR SKIN DISORDERS WITHOUT MCC (MDC 09)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for D24.2 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on D24.2 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • benign neoplasm of connective tissue of breast
  • benign neoplasm of soft parts of breast
  • fibroadenoma of breast

Source: inherited from D24

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Source: inherited from D24

Coder workflow for D24.2

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

Before you code D24.2

  1. Laterality is coded in this family. Confirm the side documented — right, left, or bilateral — and select the matching code (this page’s code: left). The unspecified-side code applies only when the record states no side. Laterality is assigned from the documented side; where a bilateral code exists and both sides are documented, it is used instead of two unilateral codes (Guidelines I.B.13).

    ReviewD24.1 · right, D24.9 · unspecified

    Guide: Laterality coding →

  2. Confirm the documented site and behavior (this code’s block classifies benign neoplasms), whether the site is primary or secondary, and whether the malignancy is current or a personal history: a previously excised malignancy with no further treatment and no evidence of disease is history, not current disease. Verify the site against the Table of Neoplasms. Neoplasm chapter guidelines (Guidelines I.C.2.a, I.C.2.d, I.C.2.m).

    See the Table of Neoplasms entries · Guide: Active cancer vs history of cancer →

Choose the right path

  1. Is the side documented?
    Yes → Select the code for the documented side (or the bilateral code when both sides are documented and one exists).
    No → Use the unspecified-side code only when the record states no side; a query is the alternative.

    ReviewD24.1 · right, D24.9 · unspecified

Consider D24.2. 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).
Anatomical site
At the most specific level the record states; a site the classification separates cannot be assumed from a procedure or a measurement.
Laterality
Right, left or bilateral as documented; unspecified only when the record states no side (Guidelines I.B.13).
Behavior and current-versus-history status
Malignant, in situ, benign or uncertain; primary or secondary; current disease or personal history (Guidelines I.C.2.m).

Official instructions as workflow

  • Excludes2 — not part of D24.2(5 notes)

    Coding workflow: The conditions named in this note are not included in D24.2. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareN60.2, N60, D22.5, D23.5

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

Coding decision scenarios

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

Documentation: The record documents the condition on one side only.

Coding question: Which code in this family applies?

Path: Select the sibling code for the documented side.

Reason: Laterality is assigned from the documented side; the unspecified-side code is for records that state no side (Guidelines I.B.13).

ReviewD24.1 · right, D24.9 · unspecified

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.

Don’t confuse D24.2 with…

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

The codes most likely to be picked instead of D24.2 — 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.

  • D24.9— 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 “Benign neoplasm of unspecified breast” takes D24.9; specificity in the record moves it back here.

    Full comparison: D24.2 vs D24.9 →

  • D24.1— Laterality relationship (Review)

    Same condition; these differ only in which side is documented.

    The same condition with a different side named (the opposite side, both sides, or none); the documented side decides, and a bilateral code, where one exists, replaces the pair when both sides are documented.

    What moves you there: A documented right side moves the case to D24.1.

    Full comparison: D24.2 vs D24.1 →

  • N60.2— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of adenofibrosis of breast adds N60.2; it is not part of this code and both may be reported when both are documented.

    Full comparison: D24.2 vs N60.2 →

  • N60— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of adenofibrosis of breast adds N60; it is not part of this code and both may be reported when both are documented.

    Full comparison: D24.2 vs N60 →

  • D22.5— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of benign neoplasm of skin of breast adds D22.5; it is not part of this code and both may be reported when both are documented.

    Full comparison: D24.2 vs D22.5 →

  • D23.5— Excludes2 relationship (Informational)

    Distinct conditions — both may be reported.

    A distinct condition — both may be reported when both are documented.

    What moves you there: Documentation of benign neoplasm of skin of breast adds D23.5; it is not part of this code and both may be reported when both are documented.

    Full comparison: D24.2 vs D23.5 →

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.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Benign neoplasm of left breast is a billable ICD-10-CM diagnosis code (D24.2).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

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-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name D24.2 or its code family, from the CMS ICD-10-CM tabular instructional notes, the CMS Table of Neoplasms and the CMS Table of Neoplasms (site match derived from the code title). Tabular-note edges are stored at the code family level that carries each note.

Referenced by 1 Excludes1 note: D21 — Other benign neoplasms of connective and other soft tissue (via D24.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 1 Excludes2 note: N60.2 — Fibroadenosis of breast (via D24.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Referenced by 13 Same-site neoplasm codes: C50.0 — Malignant neoplasm of nipple and areola (via D24.-)Compare D24.2 vs C50.0 →, C50.1 — Malignant neoplasm of central portion of breast (via D24.-)Compare D24.2 vs C50.1 →, C50.2 — Malignant neoplasm of upper-inner quadrant of breast (via D24.-)Compare D24.2 vs C50.2 →, C50.3 — Malignant neoplasm of lower-inner quadrant of breast (via D24.-)Compare D24.2 vs C50.3 →, C50.4 — Malignant neoplasm of upper-outer quadrant of breast (via D24.-)Compare D24.2 vs C50.4 →, C50.5 — Malignant neoplasm of lower-outer quadrant of breast (via D24.-)Compare D24.2 vs C50.5 →, C50.6 — Malignant neoplasm of axillary tail of breast (via D24.-)Compare D24.2 vs C50.6 →, C50.8 — Malignant neoplasm of overlapping sites of breast (via D24.-)Compare D24.2 vs C50.8 →, C50.9 — Malignant neoplasm of breast of unspecified site (via D24.-)Compare D24.2 vs C50.9 →, C79.81 — Secondary malignant neoplasm of breast (via D24.-)Compare D24.2 vs C79.81 →, D05 — Carcinoma in situ of breast (via D24.-)Compare D24.2 vs D05 →, D48.6 — Neoplasm of uncertain behavior of breast (via D24.-)Compare D24.2 vs D48.6 →, D49.3 — Neoplasm of unspecified behavior of breast (via D24.-)Compare D24.2 vs D49.3 →.

These codes represent related neoplasm behaviors affecting the same anatomic site.

Referenced by 5 Screening & history codes: Z12.3 — Encounter for screening for malignant neoplasm of breast (via D24.-)Compare D24.2 vs Z12.3 →, Z12.31 — Encounter for screening mammogram for malignant neoplasm of breast (via D24.-)Compare D24.2 vs Z12.31 →, Z12.39 — Encounter for other screening for malignant neoplasm of breast (via D24.-)Compare D24.2 vs Z12.39 →, Z80.3 — Family history of malignant neoplasm of breast (via D24.-)Compare D24.2 vs Z80.3 →, Z85.3 — Personal history of malignant neoplasm of breast (via D24.-)Compare D24.2 vs Z85.3 →.

These codes represent screening tests and history codes that refer to this active disease condition.

MS-DRG Grouper Relationships (FY2027)

Potential MS-DRG participation — not a DRG assignment.

FY2027 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 2 MS-DRGs: DRG 606 (MDC 09), DRG 607 (MDC 09).

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

Clinical classification (AHRQ CCSR):NEO073 — Benign neoplasms (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 condition, different side

Same title, differing only in which side of the body it names: right, left, bilateral or unspecified.

D24.1 — Benign neoplasm of right breast (right)Compare D24.2 vs D24.1 →, D24.9 — Benign neoplasm of unspecified breast (unspecified)Compare D24.2 vs D24.9 →

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Benign neoplasms).

D23.4 — Other benign neoplasm of skin of scalp and neck, D23.5 — Other benign neoplasm of skin of trunk, D23.60 — Other benign neoplasm of skin of unspecified upper limb, including shoulder, D23.61 — Other benign neoplasm of skin of right upper limb, including shoulder, D23.62 — Other benign neoplasm of skin of left upper limb, including shoulder, D23.70 — Other benign neoplasm of skin of unspecified lower limb, including hip, D23.71 — Other benign neoplasm of skin of right lower limb, including hip, D23.72 — Other benign neoplasm of skin of left lower limb, including hip, D23.9 — Other benign neoplasm of skin, unspecified, D24.1 — Benign neoplasm of right breast, D24.9 — Benign neoplasm of unspecified breast, D25.0 — Submucous leiomyoma of uterus, D25.1 — Intramural leiomyoma of uterus, D25.2 — Subserosal leiomyoma of uterus, D25.9 — Leiomyoma of uterus, unspecified, D26.0 — Other benign neoplasm of cervix uteri, D26.1 — Other benign neoplasm of corpus uteri, D26.7 — Other benign neoplasm of other parts of uterus, D26.9 — Other benign neoplasm of uterus, unspecified, D27.0 — Benign neoplasm of right ovary, +252 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main terms “Tumor”, “Fibroadenoma”, “Adenoma”, …; these codes share that main term but sit in a different category of the Tabular List.

D14.30 — Benign neoplasm of unspecified bronchus and lung (alveolar), D18.00 — Hemangioma unspecified site (glomus), D18.01 — Hemangioma of skin and subcutaneous tissue (glomus, skin), D18.02 — Hemangioma of intracranial structures (glomus, intracranial), D18.03 — Hemangioma of intra-abdominal structures (glomus, intra-abdominal), D18.09 — Hemangioma of other sites (glomus, specified site NEC), D21.4 — Benign neoplasm of connective and other soft tissue of abdomen (stromal, stomach, benign), D23.2 — Other benign neoplasm of skin of ear and external auricular canal (ceruminous), D23.4 — Other benign neoplasm of skin of scalp and neck (turban), D23.9 — Other benign neoplasm of skin, unspecified (apocrine, unspecified site), D27 — Benign neoplasm of ovary (hilus cell), D27.9 — Benign neoplasm of unspecified ovary (Brenner), D29.1 — Benign neoplasm of prostate (prostate), D29.20 — Benign neoplasm of unspecified testis (rete cell), D34 — Benign neoplasm of thyroid gland (Hurthle cell), D35.0 — Benign neoplasm of adrenal gland (adrenal, cortical), D35.00 — Benign neoplasm of unspecified adrenal gland (black), D35.1 — Benign neoplasm of parathyroid gland (chief cell), D35.2 — Benign neoplasm of pituitary gland (basophil, unspecified site), D37.8 — Neoplasm of uncertain behavior of other specified digestive organs (G cell, unspecified site), +114 more

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Iron Panel

Contextual Map

Every relationship of D24.2 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.

Run D24.2 with these 2 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes

Referenced by Same-site neoplasm codes (13)

Referenced by Screening & history codes MedCoder-derived

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 09 — Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast[MDC crossing]: “Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast — 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. 7,378 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2027

Neoplasm sites (17)

  • Neoplasm, neoplastic, areola — Neoplasm, neoplastic, areola — Benign [Neoplasm table]: “Neoplasm, neoplastic, areola (Benign)”— CMS Table of Neoplasms · icd10cm-fy2027
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts) — Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts) — Benign [Neoplasm table]: “Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts) (Benign)”— CMS Table of Neoplasms · icd10cm-fy2027
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), areola — Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), areola — Benign [Neoplasm table]: “Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), areola (Benign)”— CMS Table of Neoplasms · icd10cm-fy2027
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), axillary tail — Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), axillary tail — Benign [Neoplasm table]: “Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), axillary tail (Benign)”— CMS Table of Neoplasms · icd10cm-fy2027
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), central portion — Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), central portion — Benign [Neoplasm table]: “Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), central portion (Benign)”— CMS Table of Neoplasms · icd10cm-fy2027
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), inner — Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), inner — Benign [Neoplasm table]: “Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), inner (Benign)”— CMS Table of Neoplasms · icd10cm-fy2027
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower — Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower — Benign [Neoplasm table]: “Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower (Benign)”— CMS Table of Neoplasms · icd10cm-fy2027
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower-inner quadrant — Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower-inner quadrant — Benign [Neoplasm table]: “Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower-inner quadrant (Benign)”— CMS Table of Neoplasms · icd10cm-fy2027
  • and 9 more

Nearest codes

Change history

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

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Neoplasm Table Sites (17)

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

Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.

  • Neoplasm, neoplastic, areola — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts) — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), areola — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), axillary tail — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), central portion — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), inner — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower-inner quadrant — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), lower-outer quadrant — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), midline — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), nipple — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), outer — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), tail (axillary) — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), upper — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), upper-inner quadrant — Benign
  • Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), upper-outer quadrant — Benign
  • Neoplasm, neoplastic, nipple — Benign

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 FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 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 — v44 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-derived 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 editorial 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.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "D24.2 — Benign neoplasm of left breast." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/d24.2-benign-neoplasm-of-left-breast

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Benign neoplasm of left breast

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to D24.2 in its code family, with their registry titles.

View all codes in the D24 family