ICD-10 Code N64.9 - Disorder of breast, unspecified

ICD-10-CM Diagnosis Code N64.9

Diagnosis Code: N64.9 (Raw: N649)

Description: Disorder of breast, unspecified

Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting.

Overview & Clinical Details

ICD-10-CM code N64.9 is designated for Disorder of breast, unspecified. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.