ICD-10 Diagnosis Code R63.4

Abnormal weight loss

Diagnosis Code R63.4

ICD-10: R63.4
Short Description: Abnormal weight loss
Long Description: Abnormal weight loss
This is the 2018 version of the ICD-10-CM diagnosis code R63.4

Valid for Submission
The code R63.4 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • General symptoms and signs (R50-R69)
      • Symptoms and signs concerning food and fluid intake (R63)

Information for Medical Professionals

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
Diagnostic Related Groups
The diagnosis code R63.4 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
  • 783.21 - Abnormal loss of weight

  • Abnormal intentional weight loss
  • Abnormal weight loss
  • Abnormal weight loss
  • Abnormal weight loss associated with acquired immunodeficiency syndrome
  • Excessive weight loss
  • Intentional weight loss
  • Involuntary weight loss
  • Unexplained weight loss
  • Weight decreased

Information for Patients

Weight Control

Keeping a healthy weight is crucial. If you are underweight, overweight, or obese, you may have a higher risk of certain health problems.

About two thirds of adults in the U.S. are overweight or obese. Achieving a healthy weight can help you control your cholesterol, blood pressure and blood sugar. It might also help you prevent weight-related diseases, such as heart disease, diabetes, arthritis and some cancers.

Eating too much or not being physically active enough will make you overweight. To maintain your weight, the calories you eat must equal the energy you burn. To lose weight, you must use more calories than you eat. A weight-control strategy might include

  • Choosing low-fat, low-calorie foods
  • Eating smaller portions
  • Drinking water instead of sugary drinks
  • Being physically active

Eating extra calories within a well-balanced diet can help to add weight.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

  • 14 ways to burn more calories every day (Medical Encyclopedia)
  • Body mass index (Medical Encyclopedia)
  • Can you boost your metabolism? (Medical Encyclopedia)
  • Diet for rapid weight loss (Medical Encyclopedia)
  • Losing weight after pregnancy (Medical Encyclopedia)
  • Managing your weight with healthy eating (Medical Encyclopedia)
  • Portion size (Medical Encyclopedia)
  • Snacks for adults (Medical Encyclopedia)
  • Weight loss and alcohol (Medical Encyclopedia)
  • Weight-loss medications (Medical Encyclopedia)

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