Specific code 2014 ICD-9-CM Diagnosis Code 521.7
Intrinsic posteruptive color changes
  • Billable Code
  • Short description: Intrin posteruptv color.
  • ICD-9-CM 521.7 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 521.7 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Posteruptive color change of tooth
521.7 Excludes
  • accretions [deposits] on teeth (523.6)
  • extrinsic color changes (523.6)
  • pre-eruptive color changes (520.8)
Applies To
  • Staining [discoloration] of teeth:
    • NOS
    • due to:
      • drugs
      • metals
      • pulpal bleeding
Convert to ICD-10-CM: 521.7 converts approximately to:
  • 2014 ICD-10-CM K03.7 Posteruptive color changes of dental hard tissues
ICD-9-CM Volume 2 Index entries containing back-references to 521.7:
  • Change(s) (of) - see also Removal of
    • color, teeth, tooth
      • during formation 520.8
      • extrinsic 523.6
      • intrinsic posteruptive 521.7
  • Discoloration
    • teeth 521.7
      • due to
        • drugs 521.7
        • metals (copper) (silver) 521.7
        • pulpal bleeding 521.7
      • during formation 520.8
      • extrinsic 523.6
      • intrinsic posteruptive 521.7
  • Stain, staining
    • tooth, teeth (hard tissues) 521.7
      • due to
        • accretions 523.6
        • deposits (betel) (black) (green) (materia alba) (orange) (tobacco) 523.6
        • metals (copper) (silver) 521.7
        • nicotine 523.6
        • pulpal bleeding 521.7
        • tobacco 523.6
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 521.7 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.