ICD-10-CM › N00-N99 › N60-N65 › N60 Benign mammary dysplasia › N60.4
Mammary duct ectasia
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 3 more specific codes instead:
What has happened to this code
Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2012 Added to the draft code set draft Mammary duct ectasia
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from N60 Benign mammary dysplasia
Includes
- fibrocystic mastopathy
Inherited from the N60-N65 section Disorders of breast (N60-N65)
Excludes1 - never coded here
- disorders of breast associated with childbirth (O91-O92)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Mammitis
- Comedomastitis
- Dilated, dilation
- Mastitis > periductal
- Mastitis > plasma cell
- Dilatation > mammary duct
- Ectasia, ectasis > breast
- Dilatation > duct, mammary
- Disorder > breast > mastitis
- Dysplasia > mammary > duct ectasia
- Infection, infected, infective > breast
- Ectasia, ectasis > mammary duct
Codes in the same group
| Code | Description | Status |
|---|---|---|
| N60.0 | Solitary cyst of breast | Not billable |
| N60.1 | Diffuse cystic mastopathy | Not billable |
| N60.2 | Fibroadenosis of breast | Not billable |
| N60.3 | Fibrosclerosis of breast | Not billable |
| N60.8 | Other benign mammary dysplasias | Not billable |
| N60.9 | Unspecified benign mammary dysplasia | Not billable |