Specific code 2014 ICD-9-CM Diagnosis Code 387.9
Otosclerosis, unspecified
  • Billable Code
  • Short description: Otosclerosis NOS.
  • ICD-9-CM 387.9 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 387.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Bilat otosclerosis
  • Bilateral otosclerosis
  • Both sides otosclerosis (ear condition)
  • Left otosclerosis
  • Otosclerosis
  • Otosclerosis (ear condition)
  • Right otosclerosis
Clinical Information
  • Formation of spongy bone in the labyrinth capsule which can progress toward the stapes (stapedial fixation) or anteriorly toward the cochlea leading to conductive, sensorineural, or mixed hearing loss. Several genes are associated with familial otosclerosis with varied clinical signs.
  • Pathological condition of the bony labyrinth of the ear, in which there is formation of spongy bone; may cause bony ankylosis of the stapes, resulting in conductive hearing loss; cochlear otosclerosis may also develop, resulting in sensorineural hearing loss.
Convert to ICD-10-CM: 387.9 converts approximately to:
  • 2014 ICD-10-CM H80.93 Unspecified otosclerosis, bilateral
ICD-9-CM Volume 2 Index entries containing back-references to 387.9:
  • Ossification
    • ear 380.39
      • middle (see also Otosclerosis) 387.9
  • Otitis 382.9
    • insidiosa (see also Otosclerosis) 387.9
  • Otoporosis (see also Otosclerosis) 387.9
  • Otosclerosis (general) 387.9
    • cochlear (endosteal) 387.2
  • Otospongiosis (see also Otosclerosis) 387.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 387.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.