ICD-10 Code for Deafness

The default ICD-10-CM 2027 code for deafness (acquired) (complete) (hereditary) (partial) is H91.9 – Unspecified hearing loss (a header – choose a more specific code). More specific codes depend on the details documented, as listed in the official index (21 codes, 12 billable).

Main code: H91.9 – Unspecified hearing loss
Billable: No – header code

Index entries for Deafness

with blue sclera and fragility of bone – Q78.0
auditory fatigue – see Deafness, specified type NEC
aviation – T70.0 (header)
- nerve injury – see Injury, nerve, acoustic, specified type NEC
boilermaker's
central – see Deafness, sensorineural
conductive – H90.2
- and sensorineural
  - mixed – H90.8
    - bilateral – H90.6
- bilateral – H90.0
- unilateral – H90.1- (header)
  - with restricted hearing on the contralateral side – H90.A- (header)
congenital – H90.5
- with blue sclera and fragility of bone – Q78.0
due to toxic agents – see Deafness, ototoxic
emotional (hysterical) – F44.6
functional (hysterical) – F44.6
high frequency – H91.9- (header)
hysterical – F44.6
low frequency – H91.9- (header)
mental – R48.8
mixed conductive and sensorineural – H90.8
- bilateral – H90.6
- unilateral – H90.7- (header)
nerve – see Deafness, sensorineural
neural – see Deafness, sensorineural
noise-induced – H83.3 (header) – see also subcategory
- nerve injury – see Injury, nerve, acoustic, specified type NEC
nonspeaking – H91.3
ototoxic
perceptive – see Deafness, sensorineural
psychogenic (hysterical) – F44.6
sensorineural – H90.5
- and conductive
  - mixed – H90.8
    - bilateral – H90.6
- bilateral – H90.3
- unilateral – H90.4- (header)
  - with restricted hearing on the contralateral side – H90.A- (header)
sensory – see Deafness, sensorineural
specified type NEC
sudden (idiopathic) – H91.2- (header)
syphilitic – A52.15
transient ischemic – H93.01- (header)
traumatic – see Injury, nerve, acoustic, specified type NEC
word (developmental) – H93.25

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.