H91.2
Sudden idiopathic hearing loss
H91.2 is a non-billable ICD-10-CM code header for sudden idiopathic hearing loss. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are H91.20 Sudden idiopathic hearing loss, unspecified ear; H91.21 Sudden idiopathic hearing loss, right ear; H91.22 Sudden idiopathic hearing loss, left ear and H91.23 Sudden idiopathic hearing loss, bilateral. Its coding notes include 6 Excludes1 entries and 8 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- 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)
Inclusion terms
Conditions classified to this code.
- Sudden hearing loss NOS
Notes
Also from chapter/block level (1 note)
- Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry