Q16.5
Billable

Congenital malformation of inner ear

Billable / Specific Code

What is Congenital malformation of inner ear?

ICD-10-CM Q16.5 is the diagnosis code for Congenital malformation of inner ear. This code falls under the section "Congenital malformations of eye, ear, face and neck" within Chapter 17 — Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.

💡 Inclusions

Coding Guidelines for Q16.5

✅ This Code Includes

  • Congenital anomaly of membranous labyrinth
  • Congenital anomaly of organ of Corti

ICD-10-CM Code Hierarchy

Understanding where Q16.5 sits in the ICD-10-CM classification helps ensure proper coding:

Related Codes

Frequently Asked Questions

Is Q16.5 a billable ICD-10-CM code?

Yes, Q16.5 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What does Q16.5 mean?

Q16.5 is the ICD-10-CM diagnosis code for "Congenital malformation of inner ear". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.

What is the parent code of Q16.5?

The parent code of Q16.5 is Q16 ("Congenital malformations of ear causing impairment of hearing"). Q16.5 provides a more specific classification within this category.

What section is Q16.5 in?

Q16.5 is located in Section Q10-Q18 — "Congenital malformations of eye, ear, face and neck" within Chapter 17 of the ICD-10-CM Tabular List.

When should I use Q16.5?

Use Q16.5 when the patients documented diagnosis matches "Congenital malformation of inner ear" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.

People Also Ask

What is the ICD-10 code for Congenital malformation of inner ear?

The ICD-10-CM code for Congenital malformation of inner ear is Q16.5.

Can Q16.5 be used for primary diagnosis?

Yes, Q16.5 can be used as a primary diagnosis code since it is billable and specific.

What chapter is Q16.5 in?

Q16.5 is in Chapter 17 of the ICD-10-CM Tabular List.

Is Q16.5 valid for 2026?

Yes, Q16.5 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.

See Also

← PreviousQ16.4Other congenital malformations of middle earNext →Q16.9Congenital malformation of ear causing impairment of hearing, unspecified
Code Details
Q16.5
Congenital malformation of inner ear
Billable / Specific Code
17 — Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q10-Q18 — Congenital malformations of eye, ear, face and neck
2026 ICD-10-CM