ICD10

ICD-10 Code C50: Malignant neoplasm of breast

C50 is an ICD-10 diagnosis entry used to group records related to Malignant neoplasm of breast. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Neoplasms (C00-D49).

When is it used?

  • May be used when a clinician documents malignant neoplasm of breast in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
  • This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter
2Neoplasms (C00-D49)
block
C00-C96Malignant neoplasms
block
C00-C75Malignant neoplasms, stated or presumed to be primary (of specified sites), and certain specified histologies, except neuroendocrine, and of lymphoid, hematopoietic and related tissue
block
C50Malignant neoplasms of breast (C50)
currentC50

Official coding notes

Includes
  • connective tissue of breast
  • Paget's disease of breast
  • Paget's disease of nipple
Applicable to
  • code to identify estrogen, and other hormones and factors receptor status (Z17.-)
Excludes1 (do not code together)
  • skin of breast (C44.501, C44.511, C44.521, C44.591)
Use additional code
  • code to identify estrogen, and other hormones and factors receptor status (Z17.-)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

OncologistGeneral PhysicianBreast Surgeon

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
C50

Common synonyms

Malignant neoplasm of breast

Frequently asked questions

Code details

CodeC50
SystemICD10
Display nameMalignant neoplasm of breast
ChapterNeoplasms (C00-D49)
BlockMalignant neoplasms of breast (C50)

Flags

BillableNo
Valid clinical useNo

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code C50 for Malignant neoplasm of breast | HealthAssure