2026 ICD-10-CM Diagnosis Code Q12Congenital lens malformations

ICD-10-CM Codes›Q00-Q99›Q10-Q18›Q12

ICD-10-CM Q12
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q12 is a non-billable ICD-10-CM category code for congenital lens malformations, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Q12.0, Q12.1, Q12.2, and Q12.3.

Code Identity

ICD-10-CM Code
Q12
Billable Status
No — Non-Billable Category
Code Describes
Congenital lens malformations
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
CategoryQ12Congenital lens malformations
This CodeQ12Congenital lens malformations

Specific Coding for Congenital lens malformationsOverview

Non-specific codes like Q12 require more characters. Use one of these billable codes instead:

  • Use Q12.0 for Congenital cataract

  • Use Q12.1 for Congenital displaced lens

  • Use Q12.2 for Coloboma of lens

  • Use Q12.3 for Congenital aphakia

  • Use Q12.4 for Spherophakia

  • Use Q12.8 for Other congenital lens malformations

  • Use Q12.9 for Congenital lens malformation, unspecified

Patient EducationClinical

Birth Defects

A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.

The full article covers:

  • What are birth defects?
  • What causes birth defects?
  • Who is at risk of having a baby with birth defects?
  • How are birth defects diagnosed?
  • What are the treatments for birth defects?
  • Can birth defects be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

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 Q12Overview

Is Q12 (Congenital lens malformations) a billable code?

No. This is a category header that groups the codes for congenital lens malformations, and headers cannot be submitted on claims. Claims for congenital lens malformations need a more specific code from this category, such as Q12.0, Q12.1, and Q12.2.