Q31.9 – Congenital malformation of larynx, unspecified
ICD-10-CM 2027 diagnosis code · Congenital malformations of the respiratory system
ICD-10-CM code
Q31.9
- Code
Q31.9(claims format:Q319)- Description
- Congenital malformation of larynx, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- Block
- Q30-Q34 Congenital malformations of the respiratory system
- Parent codes
- Q31
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Q31 – Congenital malformations of larynx
Excludes1 (not coded here):
- congenital laryngeal stridor NOS (P28.89)
Index terms for Q31.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in Q31
- Q31.0 – Web of larynxBillable
- Q31.1 – Congenital subglottic stenosisBillable
- Q31.2 – Laryngeal hypoplasiaBillable
- Q31.3 – LaryngoceleBillable
- Q31.5 – Congenital laryngomalaciaBillable
- Q31.8 – Other congenital malformations of larynxBillable
Frequently asked questions
What is ICD-10 code Q31.9?
Q31.9 is the ICD-10-CM code for congenital malformation of larynx, unspecified, in the block Q30-Q34 (Congenital malformations of the respiratory system).
Is Q31.9 a billable code?
Yes. Q31.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does Q31.9 belong to?
It belongs to category Q31 – Congenital malformations of larynx.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.