Specific code 2012 ICD-9-CM Diagnosis Code 783.21
Loss of weight
  • Short description: Abnormal loss of weight.
  • ICD-9-CM 783.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 783.21 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 783.21.
  • More recent version(s) of ICD-9-CM 783.21: 2013 2014 2015.
Convert to ICD-10-CM: 783.21 converts directly to:
  • 2015/16 ICD-10-CM R63.4 Abnormal weight loss
Approximate Synonyms
  • Abnl loss of weight
  • Abnl weight loss
  • Abnormal loss of weight
  • Abnormal weight loss
ICD-9-CM Volume 2 Index entries containing back-references to 783.21:
  • Abnormal, abnormality, abnormalities - see also Anomaly
    • loss of weight 783.21
    • weight
      • gain 783.1
        • of pregnancy 646.1
          • with hypertension - see Toxemia, of pregnancy
      • loss 783.21
      • x-ray examination - see Abnormal, radiological examination
  • Excess, excessive, excessively
  • Loss
    • weight (cause unknown) 783.21
  • Weight
    • loss (cause unknown) 783.21
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 783.21 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.