N60.1

Non-Billable

ChapterN00–N99

Ranksubcategory

Official Description

Diffuse cystic mastopathy

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 14: Diseases of the Genitourinary System (N00-N99).

Instructional Notes

Includes

Cystic breast
Fibrocystic disease of breast

Excludes1(Not coded here)

diffuse cystic mastopathy with epithelial proliferation (N60.3-)

General instructions are available for the parent sections:

View CH14 Notes View N60-N65 Notes View N60 Notes

Clinical Hierarchy

CH14Diseases of the genitourinary system (N00-N99)

N60-N65Disorders of breast (N60-N65)

N60Benign mammary dysplasia

N60.1Diffuse cystic mastopathy

N60.11Diffuse cystic mastopathy of right breast

N60.12Diffuse cystic mastopathy of left breast

N60.19Diffuse cystic mastopathy of unspecified breast

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N60.1:

categoryN60

Benign mammary dysplasia

View context instructions

blockN60-N65

Disorders of breast (N60-N65)

View context instructions

chapterCH14

Diseases of the genitourinary system (N00-N99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to N60.1. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths

Mastopathy, mastopathia1 unique routes

cystic (chronic) (diffuse)→N60.1

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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