DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Q16 Congenital malformations of ear causing impairment of hearing

  • Header · not billable

Q16 is not billable. The category heads 7 billable codes in FY2027: the 7 codes directly below it.

Index → code

  • Mondini's malformation (cochlea) → Q16.5
  • Agenesisear → Q16.9
  • Agenesisincus → Q16.3

Where it sits

  1. Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
  2. Q10-Q18 Congenital malformations of eye, ear, face and neck (Q10-Q18)
  3. Q16 Congenital malformations of ear causing impairment of hearing
Billable codes
7
Subdivisions
7
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
93

Codes in Q16

  1. Q16.0
    Congenital absence of (ear) auricle
    BillableExempt
  2. Q16.1
    Congenital absence, atresia and stricture of auditory canal (external)
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital atresia or stricture of osseous meatus
  3. Q16.2
    Absence of eustachian tube
    BillableExempt
  4. Q16.3
    Congenital malformation of ear ossicles
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital fusion of ear ossicles
  5. Q16.4
    Other congenital malformations of middle ear
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital malformation of middle ear NOS
  6. Q16.5
    Congenital malformation of inner ear
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • Congenital anomaly of membranous labyrinth
    • Congenital anomaly of organ of Corti
  7. Q16.9
    Congenital malformation of ear causing impairment of hearing, unspecified
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital absence of ear NOS

Sources of each column.

Instructions

At Q16

Excludes1

  • congenital deafness (H90.-) H90

Notes that also apply

Block Q10-Q18 instructions (Excludes2 7): printed on the block page.

Chapter 17 instructions (Notes 1, Excludes2 1): printed on the chapter 17 page.

Index entries

  • Mondini's malformation (cochlea) → Q16.5
  • Absence (of) (organ or part) (complete or partial)auricle (ear), congenital → Q16.0
  • Agenesisauricle (ear) → Q16.0
  • Absence (of) (organ or part) (complete or partial)auditory canal (congenital) (external) → Q16.1
  • Agenesisauditory (canal) (external) → Q16.1
  • Agenesisosseous meatus (ear) → Q16.1
  • Anomaly, anomalous (congenital) (unspecified type)osseous meatus (ear) → Q16.1
  • Atresia, atreticauditory canal (external) → Q16.1
  • Atresia, atreticear canal → Q16.1
  • Atresia, atreticosseous meatus (ear) → Q16.1
  • Fusion, fused (congenital)auditory canal → Q16.1
  • Strictureear canal (external) (congenital) → Q16.1
  • Strictureosseous meatus (ear) (congenital) → Q16.1
  • Absence (of) (organ or part) (complete or partial)eustachian tube (congenital) → Q16.2
  • Agenesiseustachian tube → Q16.2
  • Accessory (congenital)auditory ossicles → Q16.3
  • Agenesisincus → Q16.3
  • Distortion(s) (congenital)ossicles, ear → Q16.3
  • Fusion, fused (congenital)ear ossicles → Q16.3
  • Maldevelopmentossicles → Q16.3
  • Persistence, persistent (congenital)arteria stapedia → Q16.3
  • Supernumerary (congenital)auditory ossicles → Q16.3
  • Supernumerary (congenital)ossicles, auditory → Q16.3
  • Absence (of) (organ or part) (complete or partial)osseous meatus (ear) → Q16.4
  • Anomaly, anomalous (congenital) (unspecified type)middle ear → Q16.4
  • Deformitymiddle ear (congenital) → Q16.4
  • Maldevelopmentmiddle ear → Q16.4
  • Malformation (congenital)middle ear → Q16.4
  • Absence (of) (organ or part) (complete or partial)inner ear, congenital → Q16.5
  • Absence (of) (organ or part) (complete or partial)labyrinth, membranous → Q16.5
  • Agenesislabyrinth, membranous → Q16.5
  • Anomaly, anomalous (congenital) (unspecified type)labyrinth, membranous → Q16.5
  • Aplasialabyrinth, membranous → Q16.5
  • Collapselabyrinth, membranous (congenital) → Q16.5
  • Deformityorgan of Corti (congenital) → Q16.5
  • Degeneration, degenerativemembranous labyrinth, congenital (causing impairment of hearing) → Q16.5
  • Degeneration, degenerativesaccule, congenital (causing impairment of hearing) → Q16.5
  • Dilatationsaccule, congenital → Q16.5
  • Enlargement, enlargedvestibular aqueduct → Q16.5
  • Malformation (congenital)cochlea → Q16.5

53 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy