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D24 ICD-10-CM Code: Benign neoplasm of breast

ICD-10-CM Code View

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FY 2026 Apr update / Neoplasms (C00-D49) / Benign neoplasms, except benign neuroendocrine tumors (D10-D36)

D24

Header CodeICD-10-CMOfficial ICD-10-CMCodebook guidance

Benign neoplasm of breast

Benign neoplasm of breast

CMS-HCC V28

N/A

Not mapped

CMS-HCC V24

N/A

Not mapped

ACA/HHS

N/A

Not mapped

ESRD/PACE

N/A

Not mapped

RXHCC

N/A

Not mapped

Code Book Path

Official
D2Benign neoplasms, except benign neuroendocrine tumors (D10-D36)
D24Benign neoplasm of breast

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for D24 in this effective period.

Excludes 2

Official
  • adenofibrosis of breast (N60.2)
  • benign cyst of breast (N60.-)
  • benign mammary dysplasia (N60.-)
  • benign neoplasm of skin of breast (D22.5, D23.5)
  • fibrocystic disease of breast (N60.-)

Related Child Codes

Official
D24.1Benign neoplasm of right breast
D24.2Benign neoplasm of left breast
D24.9Benign neoplasm of unspecified breast

Includes

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

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for D24 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for D24 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for D24 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for D24 in this effective period.

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Coder workflow notes

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What This Code Means

D24 is the ICD-10-CM diagnosis code for benign neoplasm of breast. D24 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering benign neoplasms, except benign neuroendocrine tumors (d10-d36).

Header codes like D24 cannot be reported on claims directly, they organize child codes that share clinical context but the actual diagnosis must be coded to the highest level of specificity supported by the documentation. Coders should look at D24's child codes and select the one that matches the patient's documented presentation, since payers reject header codes submitted as the primary diagnosis. For risk adjustment workflows, header codes never contribute to a Medicare Advantage member's RAF score on their own; only billable child codes that happen to map to a payment HCC affect risk-adjusted plan payments.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for D24 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Includes

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

Excludes 2, Not included here, may code separately

  • adenofibrosis of breast (N60.2)
  • benign cyst of breast (N60.-)
  • benign mammary dysplasia (N60.-)
  • benign neoplasm of skin of breast (D22.5, D23.5)
  • fibrocystic disease of breast (N60.-)

Child Codes

Code Hierarchy

D24Benign neoplasm of breast
D24Benign neoplasm of breast

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