Other specified disorders of breast

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

N64.81 Ptosis of breast
N64.82 Hypoplasia of breast
N64.89 Other specified disorders of breast

What has happened to this code

Every change the publisher made, from 2007 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.

FY2007 Added to the draft code set draft Other specified disorders of breast
FY2010 Removed from the draft draft
FY2012 Returned to the draft draft

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 N64 Other disorders of breast

Excludes2 - not included here

mechanical complication of breast prosthesis and implant (T85.4-)

Inherited from the N60-N65 section Disorders of breast (N60-N65)

Excludes1 - never coded here

disorders of breast associated with childbirth (O91-O92)

Codes in the same group

Code	Description	Status
N64.0	Fissure and fistula of nipple	Valid
N64.1	Fat necrosis of breast	Valid
N64.2	Atrophy of breast	Valid
N64.3	Galactorrhea not associated with childbirth	Valid
N64.4	Mastodynia	Valid
N64.5	Other signs and symptoms in breast	Not billable
N64.9	Disorder of breast, unspecified	Valid