H91.20 Sudden idiopathic hearing loss, unspecified ear

Instructional Notes:

H91.20
Description: Sudden idiopathic hearing loss, unspecified ear
↓
H91.2
Description: Sudden idiopathic hearing loss
Inclusion Term:
- Sudden hearing loss NOS
↓
H91
Description: Other and unspecified hearing loss
Exclude1:
- abnormal auditory perception (H93.2-)
- hearing loss as classified in H90.-
- impacted cerumen (H61.2-)
- noise-induced hearing loss (H83.3-)
- psychogenic deafness (F44.6)
- transient ischemic deafness (H93.01-)
↓
H90-H94
Description: Other disorders of ear (H90-H94)
↓
H60-H95
Description: Diseases of the ear and mastoid process
Exclude2:
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes:
- Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition