2026 ICD-10-CM Diagnosis Code Q13Congenital malformations of anterior segment of eye

ICD-10-CM Codes›Q00-Q99›Q10-Q18›Q13

ICD-10-CM Q13
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q13 is a non-billable ICD-10-CM category code for congenital malformations of anterior segment of eye, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Q13.0, Q13.1, Q13.2, and Q13.3.

Code Identity

ICD-10-CM Code
Q13
Billable Status
No — Non-Billable Category
Code Describes
Congenital malformations of anterior segment of eye
Chapter
Q10-Q18
Congenital malformations of eye, ear, face and neck

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ10-Q18Congenital malformations of eye, ear, face and neck
CategoryQ13Congenital malformations of anterior segment of eye
This CodeQ13Congenital malformations of anterior segment of eye

Specific Coding for Congenital malformations of anterior segment of eyeOverview

Non-specific codes like Q13 require more characters. Use one of these billable codes instead:

  • Use Q13.0 for Coloboma of iris

  • Use Q13.1 for Absence of iris

  • Use Q13.2 for Other congenital malformations of iris

  • Use Q13.3 for Congenital corneal opacity

  • Use Q13.4 for Other congenital corneal malformations

  • Use Q13.5 for Blue sclera

  • Q13.8 for Other congenital malformations of anterior segment of eye

  • Use Q13.81 for Rieger anomaly

  • Use Q13.89 for Other congenital malformations of anterior segment of eye

  • Use Q13.9 for Congenital malformation of anterior segment of eye, unspecified

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Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q13Overview

Is Q13 (Congenital malformations of anterior segment of eye) a billable code?

No. This is a category header that groups the codes for congenital malformations of anterior segment of eye, and headers cannot be submitted on claims. Claims for congenital malformations of anterior segment of eye need a more specific code from this category, such as Q13.0, Q13.1, and Q13.2.