Specific code 2015 ICD-9-CM Diagnosis Code 377.21
Drusen of optic disc
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 377.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 377.21 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 377.21 converts approximately to:
  • 2015/16 ICD-10-CM H47.329 Drusen of optic disc, unspecified eye
Disease Synonyms
  • Bilat optic disc drusen
  • Bilateral drusen of optic discs
  • L optic disc drusen
  • Left drusen of optic disc
  • Left optic disc drusen
  • Optic disc drusen
  • Optic disc drusen, both eyes
  • R optic disc drusen
  • Right drusen of optic disc
  • Right optic disc drusen
Clinical Information
  • Optic disk bodies composed primarily of acid mucopolysaccharides that may produce pseudopapilledema (elevation of the optic disk without associated intracranial hypertension) and visual field deficits. Drusen may also occur in the retina (see retinal drusen). (miller et al., clinical neuro-ophthalmology, 4th ed, p355)
ICD-9-CM Volume 2 Index entries containing back-references to 377.21:
  • Body, bodies
    • drusen (retina) (see also Drusen) 362.57
      • optic disc 377.21
  • Drusen
    • optic disc or papilla 377.21
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 377.21 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 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.