Q16.5 ICD-10-CA code: Congenital malformation of inner ear
Q16.5 is the ICD-10-CA code for “Congenital malformation of inner ear” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Q16.5Congenital malformation of inner ear
ICD-10-CA · Canada · Also written Q165
Index terms
Entries in CIHI’s alphabetical index that lead to Q16.5. Searching the index by the condition the note names is how coders reach this code.
- Agenesis, organ, of Corti
- Aplasia, labyrinth, membranous
- Agenesis, labyrinth, membranous
- Dilatation, saccule, congenital
- Deformity, ear (acquired), internal
- Deformity, organ of Corti (congenital)
- Malformation (congenital), internal ear
- Distortion (congenital), organ, of Corti
- Collapse, labyrinth, membranous (congenital)
- Distortion (congenital), ear (auricle) (external), inner
- Anomaly, anomalous (congenital) (unspecified type), ear, inner
- Absence (organ or part) (complete or partial), inner ear, congenital
- Anomaly, anomalous (congenital) (unspecified type), organ NEC, of Corti
- Anomaly, anomalous (congenital) (unspecified type), labyrinth, membranous
- Absence (organ or part) (complete or partial), organ, of Corti, congenital
- Degeneration, degenerative, saccule, congenital (causing impairment of hearing)
- Degeneration, degenerative, membranous labyrinth, congenital (causing impairment of hearing)
Notes for Q16.5
As CIHI prints them, with any note Q16.5 takes from the headings above it.
Includes
- Anomaly:• membranous labyrinth• organ of Corti
Excludes
Conditions classified elsewhere.
- Congenital deafness (H90.-)From Q16 Congenital malformations of ear causing impairment of hearing
- Cleft lip and cleft palate (Q35-Q37)congenital malformation of:• cervical spine (Q05.0,Q05.5,Q67.5,Q76.0-Q76.4)• larynx (Q31.-)• lip NEC (Q38.0)• nose (Q30.-)• parathyroid gland (Q89.2)• thyroid gland (Q89.2)From Q10-Q18 Congenital malformations of eye, ear, face and neck
- Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Where Q16.5 sits
- 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- 2Block Q10-Q18Congenital malformations of eye, ear, face and neck
- 3Category Q16Congenital malformations of ear causing impairment of hearing
- 4Valid code Q16.5Congenital malformation of inner ear
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code Q16.5 mean?
Q16.5 is the ICD-10-CA code for “Congenital malformation of inner ear” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Q16.5 in ICD-10-CA?
Q16.5 sits under Q16 Congenital malformations of ear causing impairment of hearing, within Q10-Q18 Congenital malformations of eye, ear, face and neck, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
What coding notes apply to Q16.5?
ICD-10-CA lists Includes, Excludes notes for Q16.5, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside Q16.5
View Q16Q16.0Congenital absence of (ear) auricleQ16.1Congenital absence, atresia and stricture of auditory canal (external)Q16.2Absence of eustachian tubeQ16.3Congenital malformation of ear ossiclesQ16.4Other congenital malformations of middle earQ16.9Congenital malformation of ear causing impairment of hearing, unspecified