N61.2 — Granulomatous mastitis
Is N61.2 billable?
No — N61.2 is a non-billable header code. N61.2 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 4 billable codes beneath N61.2.
N61.2 at a glance
| Code | N61.2 |
|---|---|
| Description | Granulomatous mastitis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is N61.2 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to N61.2. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Mastitis › granulomatous (acute) (diffuse) (nonpuerperal) (subacute)
Excludes1 — never code together — inherited from N60-N65
The conditions below can never be reported together with N61.2 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- disorders of breast associated with childbirth (O91-O92)
Excludes1 — never code together — inherited from N61
The conditions below can never be reported together with N61.2 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 14
The conditions below are not part of N61.2, but a patient may have both at the same time. When documentation supports it, N61.2 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
What codes fall under N61.2? (4)
How long has N61.2 existed?
N61.2 first appears in FY2021 (FY2020 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.