Specific code 2012 ICD-9-CM Diagnosis Code 524.21
Malocclusion, Angle's class I
  • Short description: Malocc- Angle's class I.
  • ICD-9-CM 524.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 524.21 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).
  • You are viewing the 2012 version of ICD-9-CM 524.21.
  • More recent version(s) of ICD-9-CM 524.21: 2013 2014 2015.
Convert to ICD-10-CM: 524.21 converts directly to:
  • 2015/16 ICD-10-CM M26.211 Malocclusion, Angle's class I
Approximate Synonyms
  • Malocclusion, Angle class I
  • Malocclusion, angles class 1
  • Malocclusion, Angles class I
Applies To
  • Neutro-occlusion
ICD-9-CM Volume 2 Index entries containing back-references to 524.21:
  • Angle's
    • class I 524.21
  • Anomaly, anomalous (congenital) (unspecified type) 759.9
  • Malnutrition (calorie) 263.9
    • severe 261
      • protein-calorie NEC 262
      • angle's class I 524.21
      • angle's class II 524.22
      • angle's class III 524.23
  • Neutro-occlusion 524.21
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 524.21 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.