Is ICD-10-CM code Q83 billable?

No, Q83 (Congenital malformations of breast) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code Q83 belong to?

Q83 belongs to Chapter 17 of the ICD-10-CM tabular list: Q00–Q99 (Congenital Malformations, Deformations and Chromosomal Abnormalities).

Q83Not billable, use a more specific code below

Congenital malformations of breast

In Other congenital malformations (Q80-Q89), chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities

6 billable codes under Q83: none are a CC or MCC; none map to an HCC.

Instructional notes

Excludes2: not included here, code separately if applicable

absence of pectoral muscle (Q79.8)
hypoplasia of breast (N64.82)
micromastia (N64.82)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Assign Q00-QA1 codes for documented congenital anomalies or genetic disorders at any age, coding non-inherent manifestations separately and sequencing Z38 first on the birth admission.

Read Section I.C.17 (page 74)

All codes under Q83

Q83 can't be used on a claim. Pick a billable code below; grey headings group them.

Q83 MS-DRGs

As the principal diagnosis, all 6 billable codes under Q83 group to MS-DRG 600 or 601 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Breast Diseases

Breast diseases include various conditions and changes in your breast. Most women experience breast changes at some time. Your age, hormone levels, and medicines you take may cause lumps, bumps, and discharges of fluids that are not breast milk.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.