Z12.3 ICD-10-CM Code: Encounter for screening for malignant neoplasm of breast
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
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 Z12.3 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- encounter for diagnostic examination-code to sign or symptom
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)
Use Additional Code
Supplementary codes the tabular list directs you to add.
- Use additional code to identify any family history of malignant neoplasm (Z80.-)
Frequently Asked Questions (FAQ) & Clinical Guidance
Can Z12.3 be billed directly?
No. Z12.3 (Encounter for screening for malignant neoplasm of breast) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to Z12.3 in its code family, with their registry titles.
- Z12.10 — Encounter for screening for malignant neoplasm of intestinal tract, unspecified
- Z12.11 — Encounter for screening for malignant neoplasm of colon
- Z12.12 — Encounter for screening for malignant neoplasm of rectum
- Z12.13 — Encounter for screening for malignant neoplasm of small intestine
- Z12.2 — Encounter for screening for malignant neoplasm of respiratory organs
- Z12.31 — Encounter for screening mammogram for malignant neoplasm of breast
- Z12.39 — Encounter for other screening for malignant neoplasm of breast
- Z12.4 — Encounter for screening for malignant neoplasm of cervix
- Z12.5 — Encounter for screening for malignant neoplasm of prostate
- Z12.6 — Encounter for screening for malignant neoplasm of bladder