Specific code 2014 ICD-9-CM Diagnosis Code 378.55
External ophthalmoplegia
  • Billable Code
  • ICD-9-CM 378.55 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 378.55 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Bilat progressive external ophthalmoplegia
  • Bilateral progressive external ophthalmoplegia
  • L progressive external ophthalmoplegia
  • Left progressive external ophthalmoplegia
  • Progressive external ophthalmoplegia, both eyes
  • R progressive external ophthalmoplegia
  • Right progressive external ophthalmoplegia
  • Tolosa Hunt syndrome
  • Tolosa-Hunt syndrome
Convert to ICD-10-CM: 378.55 converts approximately to:
  • 2014 ICD-10-CM H49.40 Progressive external ophthalmoplegia, unspecified eye
ICD-9-CM Volume 2 Index entries containing back-references to 378.55:
  • Ophthalmoplegia (see also Strabismus) 378.9
    • painful 378.55
  • Painful - see also Pain
    • ophthalmoplegia 378.55
  • Paralysis, paralytic (complete) (incomplete) 344.9
    • eye muscle (extrinsic) 378.55
    • muscle (flaccid) 359.9
      • due to nerve lesion NEC 355.9
      • eye (extrinsic) 378.55
      • iris sphincter 364.89
      • ischemic (complicating trauma) (Volkmann's) 958.6
      • pseudohypertrophic 359.1
    • oculomotor (nerve) (partial) 378.51
    • rectus muscle (eye) 378.55
  • Paresis (see also Paralysis) 344.9
    • extrinsic muscle, eye 378.55
  • Syndrome - see also Disease
    • Tolosa-Hunt 378.55
  • Tolosa-Hunt syndrome 378.55
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 378.55 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.