N60.19 ICD-10-CM Code: Diffuse cystic mastopathy of unspecified breast
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 600 — NON-MALIGNANT BREAST DISORDERS WITH CC/MCC (MDC 09)
- MS-DRG 601 — NON-MALIGNANT BREAST DISORDERS WITHOUT CC/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.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for N60.19 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- fibrocystic mastopathy
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- diffuse cystic mastopathy with epithelial proliferation (N60.3-)
- disorders of breast associated with childbirth (O91-O92)
Nearest Codes in This Family
Official ICD-10-CM classifications closest to N60.19 in its code family, with their registry titles.
- N60.02 — Solitary cyst of left breast
- N60.09 — Solitary cyst of unspecified breast
- N60.1 — Diffuse cystic mastopathy
- N60.11 — Diffuse cystic mastopathy of right breast
- N60.12 — Diffuse cystic mastopathy of left breast
- N60.2 — Fibroadenosis of breast
- N60.21 — Fibroadenosis of right breast
- N60.22 — Fibroadenosis of left breast
- N60.29 — Fibroadenosis of unspecified breast
- N60.3 — Fibrosclerosis of breast