U.S. ICD-10-CM · FY 2027

Q13.1 ICD-10-CM Code: Absence of iris

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

Q13.1

Absence of iris

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where Q13.1 sits

  1. 1

    Chapter 17

    Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)

  2. 2

    Section

    Congenital malformations of eye, ear, face and neck (Q10-Q18)

  3. 3

    Category Q13

    Congenital malformations of anterior segment of eye

  4. 4

    Code Q13.1

    Absence of iris

Documentation details

Notes for this code

Inclusion terms

  • Aniridia

Code first

No “code first” instruction is listed for Q13.1.

Use additional code

  • code for associated glaucoma (H42)

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for Q13.1.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for Q13.1.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code Q13.1 mean?

Q13.1 is the FY 2027 U.S. ICD-10-CM code for “Absence of iris.”

Is Q13.1 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, Q13.1 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is Q13.1 located in ICD-10-CM?

Q13.1 is listed in Chapter 17, Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1), within Congenital malformations of eye, ear, face and neck (Q10-Q18) (Q10–Q18), under category Q13, Congenital malformations of anterior segment of eye.

What coding notes are listed for Q13.1?

Its listed inclusion terms are Aniridia. No code-first instruction is listed. Additional-code instructions: code for associated glaucoma (H42). No Excludes1 note is listed. No Excludes2 note is listed.

Keep exploring

Related Q13 codes

Q13.0

Coloboma of iris

Q13.2

Other congenital malformations of iris

Q13.3

Congenital corneal opacity

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