Is ICD-10-CM code Q31 billable?

No, Q31 (Congenital malformations of larynx) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code Q31 belong to?

Q31 belongs to Chapter 17 of the ICD-10-CM tabular list: Q00–Q99 (Congenital Malformations, Deformations and Chromosomal Abnormalities).

Q31

Non-Billable

ChapterQ00–Q99

Rankcategory

Description

Congenital malformations of larynx

About ICD-10-CM code Q31

Under Q00-Q99 Congenital Malformations, Deformations and Chromosomal Abnormalities, within Congenital malformations of the respiratory system (Q30-Q34), ICD-10-CM code Q31 describes Congenital malformations of larynx. This code cannot be billed directly because more specific child codes exist beneath it.

Use a more specific code (7 billable)

Q31.0Web of larynx Q31.1Congenital subglottic stenosis Q31.2Laryngeal hypoplasia Q31.3Laryngocele Q31.5Congenital laryngomalacia Q31.8Other congenital malformations of larynx Q31.9Congenital malformation of larynx, unspecified

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

CH17 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

inborn errors of metabolism (E70-E88)

Instructional Notes

Excludes1(Not coded here. Use a different code.)

congenital laryngeal stridor NOS (P28.89)

Clinical Hierarchy

BillableHas subcodes

CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Q30-Q34Congenital malformations of the respiratory system (Q30-Q34)

Q31Congenital malformations of larynxNot billable

Q31.0Web of larynxBillable

Q31.1Congenital subglottic stenosisBillable

Q31.2Laryngeal hypoplasiaBillable

Q31.3LaryngoceleBillable

Q31.5Congenital laryngomalaciaBillable

Q31.8Other congenital malformations of larynxBillable

Q31.9Congenital malformation of larynx, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q31:

chapterCH17

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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