C50.A — Malignant inflammatory neoplasm of breast
Is C50.A billable?
No — C50.A is a non-billable header code. C50.A groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath C50.A.
C50.A at a glance
| Code | C50.A |
|---|---|
| Description | Malignant inflammatory neoplasm of breast |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Inclusion terms
Alternative wording in documentation that is classified to C50.A.
- Inflammatory breast cancer (IBC)
Excludes1 — never code together — inherited from C50
The conditions below can never be reported together with C50.A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from C50
Report an additional code alongside C50.A to fully describe the condition. C50.A is sequenced first.
- code to identify estrogen, and other hormones and factors receptor status (Z17.-)
What codes fall under C50.A? (3)
How long has C50.A existed?
C50.A first appears in FY2026.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the C50 family? (9)
- C50.0Malignant neoplasm of nipple and areolanot billable
- C50.1Malignant neoplasm of central portion of breastnot billable
- C50.2Malignant neoplasm of upper-inner quadrant of breastnot billable
- C50.3Malignant neoplasm of lower-inner quadrant of breastnot billable
- C50.4Malignant neoplasm of upper-outer quadrant of breastnot billable
- C50.5Malignant neoplasm of lower-outer quadrant of breastnot billable
- C50.6Malignant neoplasm of axillary tail of breastnot billable
- C50.8Malignant neoplasm of overlapping sites of breastnot billable
- C50.9Malignant neoplasm of breast of unspecified sitenot billable