Non-Billable / Non-Specific Code
ICD-10-CM Q31 is the diagnosis code for Congenital malformations of larynx. This code falls under the section "Congenital malformations of the respiratory system" within Chapter 17 — Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as Q31. They are mutually exclusive:
Understanding where Q31 sits in the ICD-10-CM classification helps ensure proper coding:
No, Q31 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
Q31 is the ICD-10-CM diagnosis code for "Congenital malformations of larynx". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
Q31 is located in Section Q30-Q34 — "Congenital malformations of the respiratory system" within Chapter 17 of the ICD-10-CM Tabular List.
Q31 has 7 sub-code(s) that provide more specific detail: Q31.0, Q31.1, Q31.2, Q31.3, Q31.5 and more.
Use Q31 when the patients documented diagnosis matches "Congenital malformations of larynx" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Congenital malformations of larynx is Q31.
No, Q31 is non-billable. Use a more specific sub-code for primary diagnosis billing.
Q31 is in Chapter 17 of the ICD-10-CM Tabular List.
Type 1 Excludes for Q31 include: congenital laryngeal stridor NOS (P28.89).
Yes, Q31 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.