C50.1 is the authoritative medical code for Malignant neoplasm of central portion of breast. This classification is used in medical billing and clinical recording to specify the clinical criteria for malignant neoplasm of central portion of breast (ICD-10-CM C50.1), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Malignant neoplasm of central portion of breast is a non-billable ICD-10-CM category code C50.1. A more specific billable subcode must be selected for claims submission. Includes: connective tissue of breast; Paget's disease of breast; Paget's disease of nipple. Excludes1 (not coded here): 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.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for C50.1 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- connective tissue of breast
- Paget's disease of breast
- Paget's disease of nipple
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- skin of breast (C44.501, C44.511, C44.521, C44.591)
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code to identify estrogen, and other hormones and factors receptor status Z17.-
Frequently Asked Questions (FAQ) & Clinical Guidance
Can C50.1 be billed directly?
No. C50.1 (Malignant neoplasm of central portion of breast) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
What can't be coded together with C50.1?
Per official ICD-10-CM Excludes1 instructions, C50.1 must not be reported together with: skin of breast (C44.501, C44.511, C44.521, C44.591).
Is an additional code needed with C50.1?
Use additional code(s) to specify: code to identify estrogen, and other hormones and factors receptor status (Z17.-).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to C50.1 in its code family, with their registry titles.
- C50.111 — Malignant neoplasm of central portion of right female breast
- C50.112 — Malignant neoplasm of central portion of left female breast
- C50.119 — Malignant neoplasm of central portion of unspecified female breast
- C50.121 — Malignant neoplasm of central portion of right male breast
- C50.122 — Malignant neoplasm of central portion of left male breast
- C50.129 — Malignant neoplasm of central portion of unspecified male breast
Neoplasm Table Sites (1)
Anatomical sites from the official ICD-10-CM Table of Neoplasms that map to this code, with the matching behavior column.
- Neoplasm, neoplastic, breast (connective tissue) (glandular tissue) (soft parts), central portion — Malignant, Primary