Q31Header code — not billable

Congenital malformations of larynx

Chapter
17. Congenital malformations, deformations and chromosomal abnormalities
Category
Q31
Effective date
October 1, 2026

Related codes in category Q31

Q31.0Web of larynxYesQ31.1Congenital subglottic stenosisYesQ31.2Laryngeal hypoplasiaYesQ31.3LaryngoceleYesQ31.5Congenital laryngomalaciaYesQ31.8Other congenital malformations of larynxYesQ31.9Congenital malformation of larynx, unspecifiedYes

Frequently asked questions

What is ICD-10 code Q31?

Q31 is an ICD-10-CM diagnosis code for Congenital malformations of larynx.

Is Q31 a billable code?

No. Q31 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is Q31 in?

Q31 falls under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities.

When did Q31 become effective?

Q31 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to Q31?

Q31 belongs to category Q31, which includes 7 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.