Non-Billable / Non-Specific Code
ICD-10-CM Q23 is the diagnosis code for Congenital malformations of aortic and mitral valves. This code falls under the section "Congenital malformations of the circulatory 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.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where Q23 sits in the ICD-10-CM classification helps ensure proper coding:
No, Q23 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
Q23 is the ICD-10-CM diagnosis code for "Congenital malformations of aortic and mitral valves". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
Q23 is located in Section Q20-Q28 — "Congenital malformations of the circulatory system" within Chapter 17 of the ICD-10-CM Tabular List.
Q23 has 7 sub-code(s) that provide more specific detail: Q23.0, Q23.1, Q23.2, Q23.3, Q23.4 and more.
Use Q23 when the patients documented diagnosis matches "Congenital malformations of aortic and mitral valves" 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 aortic and mitral valves is Q23.
No, Q23 is non-billable. Use a more specific sub-code for primary diagnosis billing.
Q23 is in Chapter 17 of the ICD-10-CM Tabular List.
Yes, Q23 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.