Q13.1

ICD-10Billable

Absence of iris

Official ICD-10-CM descriptor (FY2026)

Absence of iris

Q13.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Aniridia

Use additional code

Report an additional code to identify the associated condition.

code for associated glaucoma (H42)

Related codes in Q13

Where this code sits

Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA0)
Block: Congenital malformations of eye, ear, face and neck (Q10-Q18)
Parent code: Q13

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.