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Neoplasm Table

breast (connective tissue) (glandular tissue) (soft parts)

SiteMalignant primaryMalignant secondaryCa in situBenignUncertain behaviorUnspecified behavior
breast (connective tissue) (glandular tissue) (soft parts)C50.9-C79.81D05.-D24.-D48.6-D49.3
areolaC50.0-C79.81D05.-D24.-D48.6-D49.3
axillary tailC50.6-C79.81D05.-D24.-D48.6-D49.3
central portionC50.1-C79.81D05.-D24.-D48.6-D49.3
inflammatoryC50.A-—————
innerC50.8-C79.81D05.-D24.-D48.6-D49.3
lowerC50.8-C79.81D05.-D24.-D48.6-D49.3
lower-inner quadrantC50.3-C79.81D05.-D24.-D48.6-D49.3
lower-outer quadrantC50.5-C79.81D05.-D24.-D48.6-D49.3
mastectomy site (skin) — see also Neoplasm, breast, skinC44.501C79.2————
specified as breast tissueC50.8-C79.81————
midlineC50.8-C79.81D05.-D24.-D48.6-D49.3
nippleC50.0-C79.81D05.-D24.-D48.6-D49.3
outerC50.8-C79.81D05.-D24.-D48.6-D49.3
overlapping lesionC50.8-—————
skinC44.501C79.2D04.5D23.5D48.5D49.2
basal cell carcinomaC44.511—————
specified type NECC44.591—————
squamous cell carcinomaC44.521—————
tail (axillary)C50.6-C79.81D05.-D24.-D48.6-D49.3
upperC50.8-C79.81D05.-D24.-D48.6-D49.3
upper-inner quadrantC50.2-C79.81D05.-D24.-D48.6-D49.3
upper-outer quadrantC50.4-C79.81D05.-D24.-D48.6-D49.3
Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.

Frequently asked questions

What are the ICD-10-CM neoplasm codes for breast?

Per the ICD-10-CM Neoplasm Table: malignant primary C50.9-; malignant secondary C79.81; ca in situ D05.-; benign D24.-; uncertain behavior D48.6-; unspecified behavior D49.3. Always confirm the code, and add the required 7th character where applicable, in the Tabular List.

ICD-10-CM Neoplasm Table maintained by CDC/NCHS (public domain), from the CMS FY2027 release.