2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Congenital malformations of anterior segment of eye
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q13: its own notes plus those printed at block Q10-Q18 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block Q10-Q18 Congenital malformations of eye, ear, face and neck applies to 62 codes
  • cleft lip and cleft palate (Q35-Q37)
  • congenital malformation of cervical spine (Q05.0, Q05.5, Q67.5, Q76.0-Q76.4)
  • congenital malformation of larynx (Q31.-)
  • congenital malformation of lip NEC (Q38.0)
  • congenital malformation of nose (Q30.-)
  • congenital malformation of parathyroid gland (Q89.2)
  • congenital malformation of thyroid gland (Q89.2)
From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • Codes from this chapter are not for use on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

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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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Q13Overview

What is the ICD-10 code for congenital malformations of anterior segment of eye?

Q13 is the ICD-10-CM category for congenital malformations of anterior segment of eye, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.