Q16.5 – Congenital malformation of inner ear

Code

Q16.5 (claims format: Q165)

Description

Congenital malformation of inner ear

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

Q10-Q18 Congenital malformations of eye, ear, face and neck

Parent codes

Q16

Notes for Q16.5

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Q16 – Congenital malformations of ear causing impairment of hearing

Block Q10-Q18

Index terms for Q16.5

Entries in the ICD-10-CM alphabetic index that lead to this code:

• Malformation, cochlea
• Mondini's malformation
• Distortion, ear, inner
• Malformation, Mondini's
• Malformation, ear, inner
• Deformity, organ of Corti
• Agenesis, organ, of Corti
• Malformation, internal ear
• Distortion, organ, of Corti
• Absence, inner ear, congenital
• Absence, labyrinth, membranous
• Aplasia, labyrinth, membranous
• Anomaly, anomalous, ear, inner
• Dilatation, saccule, congenital
• Agenesis, labyrinth, membranous
• Absence, ear, congenital, inner
• Collapse, labyrinth, membranous
• Anomaly, anomalous, organ, of Corti
• Deformity, ear, congenital, internal
• Absence, organ, of Corti, congenital
• Anomaly, anomalous, labyrinth, membranous
• Enlargement, enlarged, vestibular aqueduct
• Degeneration, degenerative, saccule, congenital
• Degeneration, degenerative, membranous labyrinth, congenital

Related codes in Q16

• Q16.0 – Congenital absence of (ear) auricleBillable
• Q16.1 – Congenital absence, atresia and stricture of auditory canal (external)Billable
• Q16.2 – Absence of eustachian tubeBillable
• Q16.3 – Congenital malformation of ear ossiclesBillable
• Q16.4 – Other congenital malformations of middle earBillable
• Q16.9 – Congenital malformation of ear causing impairment of hearing, unspecifiedBillable