WEIGHT LOSS ICD10: Consequences and Treatments

by Gayatri_Barnwal
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Everyone is crazy about a slim and fit body, but it can be scary when you start losing weight unintentionally. If you are losing weight without any conscious efforts and lifestyle changes, it can be a sign of something wrong developing inside you. You should be cautious and concerned about any abnormal changes in your body. Abnormal Weight loss ICD10 is one of them. 

WEIGHT LOSS ICD10: Consequences and Treatments
WEIGHT LOSS ICD10: Consequences and Treatments


Let’s first see what is ICD? ICD is a coding system to classify diseases and injuries in the body. It is used in the healthcare industry for easy storage, tracking, and monitoring of diagnostic information (like symptoms, abnormalities, death causes, etc). Along with doctors, other health professionals like researchers, insurance companies, and paramedic staff communicate in these codes. It plays an important role in providing correct treatment and reimbursements calls. ICD10 is the latest version of these codes.

The ICD 10 code for unintentional weight loss is R63.4. This code is used in Heath and medical background to refer to the decrease in body fat or muscles due to some unknown factors. 

  • R63.4 is a billable or valid ICD10 code for the diagnosis of “unintentional weight loss” that can be applied for reimbursement goals. 
  • This ICD10 weight loss code got its current edition on Oct 1, 2020.

Code History of weight loss ICD10:

  • 2016: Change (first year of ICD-10-CM new code)
  • 2017: No change
  • 2018: No change
  • 2019: No change
  • 2020: No change
  • 2021: No change

It is important to use the correct code for getting the correct treatment. For instance, you can’t use this code if you are following a diet- plan. There is another code R63 for weight loss related to improper food.


When a person starts losing weight without any diet, habit changes, or exercises and there is no evident explanation, it is called unintentional weight loss. If there is a significant drop in weight on its own, you should be concerned about it. It can indicate some serious underlying issues, which can range from a small viral infection to something like cancer and depression. There is always a slight fluctuation in body weight, which is pretty normal. Sometimes it may drop due to minor cold and stress, or you may gain a little due to parties and holidays. But it becomes an issue if you are unable to determine a proper reason. 


If you have unintentionally lost more than 5% of your normal weight or more than 10 pounds within 6 to 12 months, it is considered unintentional weight loss. You should immediately go for a doctor’s supervision. You should get more aware of other symptoms and discuss them with your medico. 


There can be many causes of involuntary weight loss icd10, from some chronic diseases to minor illnesses and psychological disturbances.

Common causes:

  • Depression
  • Diarrhea
  • Oral ulcers
  • Viral infections
  • Not eating enough or eating disorder
  • Side effects of medicines
  • Rheumatoid arthritis in elders

Less common causes:

  • Overactive thyroid
  • Cancer
  • Gastroenteritis
  • Dementia
  • HIV or AID
  • Bowel inflammation ( Crohn’s disease, Celiac disease)
  • Diabetes
  • Tuberculosis

Consequences of weight loss ICD10

As a consequence of unintentional weight loss ICD10, you may suffer from several problems:

  1. Bad immunity system: There can be more health complications due to low immunity power.
  2. Weakness and tiredness: You can feel a lack of support in your body due to muscle wasting.
  3. Mood swings and irritability: It comes with the constant feeling of tiredness and health problems.
  4. Loss of appetite: Loss of appetite ICD10 can be a result of Depression & Anxiety, Cancer, Chronic infections, Side effects of medicines, and Drug abuse.
  5. Malnutrition: Continuous weight loss can cause malnutrition which means your body is not getting sufficient nutrients. Decreased absorption of calories and other nutrients in the body can be due to Diarrhea, Pancreas inflammation, digestive disorders, and Overuse of laxatives.

To avoid any of such issues taking the form of a big problem, you should take treatment as soon as possible.


treatment for weight loss ICD10
treatment for weight loss ICD10


Your doctor can ask questions about diet changes, recent illness, medications, other symptoms, and medical history to identify the cause of weight loss. He may refer to some physical examinations and tests like blood tests or imaging scans to uncover any particular underlying disease.

Diet plan or advice:

If there are no serious diseases, weight loss is considered to be due to diet or digestive issues. Then, your doctor may recommend some blood tests to determine nutrients levels in your body like vitamins and minerals. It can help to find any deficiency and requirements. He may suggest a diet plan to treat the deficiency and some nutrient supplements to consume. For example, your doctor may add certain fruits, vegetables, nutrition shakes, and flavor enhancers to your diet. You can also visit a dietician for counseling. The ICD10 code for weight loss counseling is Z71.3.


In case you are diagnosed with some serious health conditions, your doctor may recommend more tests or assessments for more information. He may prescribe medications and proceed with the treatment of the respective illness or disease.


  • Overweight ICD10 (Code- E66.3): There are many health-related risks associated with being overweight. It can also result in difficulty losing weight ICD10.
  • Loss of appetite ICD10 (Code- R63.0): It can cause a strong distaste for food. So, you will be unable to eat leading to anorexia.
  • Weight gain ICD10 (Code- R63.5): It is involuntary weight gain that happens when a person gains weight without trying or increasing his food intake.
  • Underweight ICD10 (Code- R63.6): A survey by NHANES in 2015-16 found that about 1.5% of us adults of age equal to or more than 20 are underweight. Studies have also shown that being underweight is even more harmful than being overweight.

You should maintain a healthy weight with a good BMI to avoid chronic health complications and have a good life.

Frequently Asked Questions (FAQs):-

Q. What is diagnosis code Z71 89?

Ans. Z71 89 is an ICD10 code for other specified counseling. This code refers to conditions affecting the health status of a person but not a present sickness. It means the person is taking other counseling or advice services that don’t fit in any classification. Doctors use this code when the patient doesn’t have all the symptoms to satisfy the formal diagnosis criteria.

Q. Is there an ICD10 code for at-risk for malnutrition?

Ans. E46 is the ICD code used for the diagnosis of unspecified protein-calorie malnutrition. It is a condition when a person doesn’t consume a sufficient amount of nutrients and when absorption of nutrients in the body decreases. There can be symptoms of dizziness, tiredness, and loss of weight. In such a case, a person is at risk of malnutrition.

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