Specific code 2015 ICD-9-CM Diagnosis Code 370.21
Punctate keratitis
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 370.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 370.21 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: 370.21 converts approximately to:
  • 2015/16 ICD-10-CM H16.149 Punctate keratitis, unspecified eye
Approximate Synonyms
  • Bilat punctate keratitis
  • Bilateral punctate keratitis
  • Keratitis, punctate
  • Keratitis, punctate (eye condition)
  • L punctate keratitis
  • Left punctate keratitis
  • Punctate keratitis (eye condition)
  • Punctate keratitis, both eyes
  • R punctate keratitis
  • Right punctate keratitis
Applies To
  • Thygeson's superficial punctate keratitis
ICD-9-CM Volume 2 Index entries containing back-references to 370.21:
  • Keratitis (nodular) (nonulcerative) (simple) (zonular) NEC 370.9
    • punctata, punctate 370.21
      • leprosa 030.0 [370.21]
      • profunda 090.3
      • superficial (Thygeson's) 370.21
    • superficial 370.20
      • with conjunctivitis (see also Keratoconjunctivitis) 370.40
      • punctate (Thygeson's) 370.21
  • Thygeson's superficial punctate keratitis 370.21
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 370.21 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.