Specific code 2011 ICD-9-CM Diagnosis Code 524.31
Crowding of teeth
  • ICD-9-CM 524.31 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 524.31 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2011 version of ICD-9-CM 524.31.
  • More recent version(s) of ICD-9-CM 524.31: 2012 2013 2014.
Disease Synonyms
  • Teeth crowding
Convert to ICD-10-CM: 524.31 converts directly to:
  • 2014 ICD-10-CM M26.31 Crowding of fully erupted teeth
ICD-9-CM Volume 2 Index entries containing back-references to 524.31:
  • Accessory (congenital)
    • teeth, tooth 520.1
      • causing crowding 524.31
  • Anomaly, anomalous (congenital) (unspecified type) 759.9
  • Crowding, teeth 524.31
  • Distomolar (fourth molar) 520.1
    • causing crowding 524.31
  • Excess, excessive, excessively
    • number of teeth 520.1
      • causing crowding 524.31
  • Malocclusion (teeth) 524.4
    • due to
      • abnormal swallowing 524.59
      • accessory teeth (causing crowding) 524.31
      • dentofacial abnormality NEC 524.89
      • impacted teeth (causing crowding) 520.6
      • missing teeth 524.30
      • mouth breathing 524.59
      • sleep postures 524.59
      • supernumerary teeth (causing crowding) 524.31
      • thumb sucking 524.59
      • tongue, lip, or finger habits 524.59
  • Mesiodens, mesiodentes 520.1
    • causing crowding 524.31
  • Paramolar 520.1
    • causing crowding 524.31
  • Supernumerary (congenital)
    • teeth 520.1
      • causing crowding 524.31
  • Supplemental teeth 520.1
    • causing crowding 524.31
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 524.31 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 2011 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.