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  6. 2026 ICD-10-CM Code Z68

2026 ICD-10-CM Diagnosis Code Z68

Body mass index [BMI]

ICD-10-CM Code:
Z68
ICD-10 Code for:
Body mass index [BMI]
Is Billable?
Not Valid for Submission
Code Navigator:

Z68 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of body mass index [bmi]. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Body mass index [BMI]

Non-specific codes like Z68 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for body mass index [bmi]:

  • Use Z68.1 for Body mass index [BMI] 19.9 or less, adult - BILLABLE CODE

  • Z68.2 for Body mass index [BMI] 20-29, adult - NON-BILLABLE CODE

  • Use Z68.20 for Body mass index [BMI] 20.0-20.9, adult - BILLABLE CODE

  • Use Z68.21 for Body mass index [BMI] 21.0-21.9, adult - BILLABLE CODE

  • Use Z68.22 for Body mass index [BMI] 22.0-22.9, adult - BILLABLE CODE

  • Use Z68.23 for Body mass index [BMI] 23.0-23.9, adult - BILLABLE CODE

  • Use Z68.24 for Body mass index [BMI] 24.0-24.9, adult - BILLABLE CODE

  • Use Z68.25 for Body mass index [BMI] 25.0-25.9, adult - BILLABLE CODE

  • Use Z68.26 for Body mass index [BMI] 26.0-26.9, adult - BILLABLE CODE

  • Use Z68.27 for Body mass index [BMI] 27.0-27.9, adult - BILLABLE CODE

  • Use Z68.28 for Body mass index [BMI] 28.0-28.9, adult - BILLABLE CODE

  • Use Z68.29 for Body mass index [BMI] 29.0-29.9, adult - BILLABLE CODE

  • Z68.3 for Body mass index [BMI] 30-39, adult - NON-BILLABLE CODE

  • Use Z68.30 for Body mass index [BMI] 30.0-30.9, adult - BILLABLE CODE

  • Use Z68.31 for Body mass index [BMI] 31.0-31.9, adult - BILLABLE CODE

  • Use Z68.32 for Body mass index [BMI] 32.0-32.9, adult - BILLABLE CODE

  • Use Z68.33 for Body mass index [BMI] 33.0-33.9, adult - BILLABLE CODE

  • Use Z68.34 for Body mass index [BMI] 34.0-34.9, adult - BILLABLE CODE

  • Use Z68.35 for Body mass index [BMI] 35.0-35.9, adult - BILLABLE CODE

  • Use Z68.36 for Body mass index [BMI] 36.0-36.9, adult - BILLABLE CODE

  • Use Z68.37 for Body mass index [BMI] 37.0-37.9, adult - BILLABLE CODE

  • Use Z68.38 for Body mass index [BMI] 38.0-38.9, adult - BILLABLE CODE

  • Use Z68.39 for Body mass index [BMI] 39.0-39.9, adult - BILLABLE CODE

  • Z68.4 for Body mass index [BMI] 40 or greater, adult - NON-BILLABLE CODE

  • Use Z68.41 for Body mass index [BMI] 40.0-44.9, adult - BILLABLE CODE

  • Use Z68.42 for Body mass index [BMI] 45.0-49.9, adult - BILLABLE CODE

  • Use Z68.43 for Body mass index [BMI] 50.0-59.9, adult - BILLABLE CODE

  • Use Z68.44 for Body mass index [BMI] 60.0-69.9, adult - BILLABLE CODE

  • Use Z68.45 for Body mass index [BMI] 70 or greater, adult - BILLABLE CODE

  • Z68.5 for Body mass index [BMI] pediatric - NON-BILLABLE CODE

  • Use Z68.51 for Body mass index [BMI] pediatric, less than 5th percentile for age - BILLABLE CODE

  • Use Z68.52 for Body mass index [BMI] pediatric, 5th percentile to less than 85th percentile for age - BILLABLE CODE

  • Use Z68.53 for Body mass index [BMI] pediatric, 85th percentile to less than 95th percentile for age - BILLABLE CODE

  • Use Z68.54 for Body mass index [BMI] pediatric, 95th percentile for age to less than 120% of the 95th percentile for age - BILLABLE CODE

  • Use Z68.55 for Body mass index [BMI] pediatric, 120% of the 95th percentile for age to less than 140% of the 95th percentile for age - BILLABLE CODE

  • Use Z68.56 for Body mass index [BMI] pediatric, greater than or equal to 140% of the 95th percentile for age - BILLABLE CODE

Code Classification

  • Factors influencing health status and contact with health services
    Z00–Z99
    • Body mass index (Z68)
      BMI
      • Body mass index [BMI]
        Z68

Clinical Information

  • Body Mass Index

    an indicator of body density as determined by the relationship of body weight to body height. bmi=weight (kg)/height squared (m2). bmi correlates with body fat (adipose tissue). their relationship varies with age and gender. for adults, bmi falls into these categories: below 18.5 (underweight); 18.5-24.9 (normal); 25.0-29.9 (overweight); 30.0 and above (obese). (national center for health statistics, centers for disease control and prevention)

  • Obesity Paradox

    an observation that high body mass index is sometimes associated with lower cardiovascular disease mortality in certain population, e.g., elderly.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Kilograms per meters squared

  • BMI adult codes are for use for persons 20 years of age or older
  • BMI pediatric codes are for use for persons 2-19 years of age.
  • These percentiles are based on the growth charts published by the Centers for Disease Control and Prevention (CDC)

Patient Education


Body Weight

What is body weight?

Body weight is the total mass of your body. Keeping track of your weight is one way to check for changes in your health, but it can't tell you the whole story. That's because your weight includes muscle, bone, fat, and water. Also, everyday factors can play a role in your weight, such as your:

  • Diet
  • Activity level
  • Stress level
  • Sleep habits
  • Family history and genetics
  • Age

What factors help determine a healthy body weight?

A healthy weight is more than just a number on the scale. It's about feeling good, having energy, and lowering your risk of disease. Your health care provider can help you determine a healthy body weight based on several factors. These include your:

  • Body Mass Index (BMI). BMI is a measure of how much you weigh compared to how tall you are. The higher your BMI, the higher your risk for certain diseases. BMI does not distinguish between fat, muscle, and bone mass. It also may overestimate body fat in athletes or those with a muscular build, or underestimate body fat in older persons or others who have lost muscle.
  • Waist circumference. If most of your body fat is around your abdomen (belly) rather than your hips, you may be at a higher risk for heart disease and type 2 diabetes.
  • Health history. Your health care provider will likely consider your risk factors for diseases and health conditions, such as having high cholesterol, in determining your healthy body weight.

What are body weight ranges?

Having a healthy body weight may lower your chance of developing certain health problems. Carrying too much or too little weight can affect your health. Ranges of body weight include:

  • Underweight. Your weight is lower than it should be for your health.
  • Normal. Your weight is within a healthy range.
  • Overweight. Your weight is greater than it should be for your health.
  • Obese. Your body fat is greater than it should be for your health.

Body weight needs can be different at different ages. For children, weight and growth are tracked over time based on their age. For older adults, keeping muscle and strength is key, and sudden weight loss should always be checked by your provider.

What if I have a sudden gain or loss of weight?

Talk to your provider if you're losing or gaining weight without trying. A sudden, unexpected change in weight can be a sign of a medical problem.

Causes for sudden weight loss can include:

  • Thyroid problems
  • Cancer
  • Infectious diseases
  • Digestive diseases
  • Certain medicines

Causes for sudden weight gain can include:

  • Certain medicines
  • Thyroid problems
  • Heart failure
  • Kidney disease
  • Liver disease

How can I maintain a healthy body weight?

Maintaining a healthy body weight can improve energy, sleep, and overall wellbeing. Talk to your provider about what a healthy weight would be for you. If they recommend that you gain or lose weight, they might refer you to a dietician for support. A dietician is a professional who has special training to help you learn the best way to eat.

  • Good nutrition and exercise can help in losing weight. Even a small change in weight can lower your risk of developing certain diseases.
  • Eating extra calories within a well-balanced diet and treating any underlying medical problems can help you gain weight.

Focus on your health, not just the number on the scale. With daily healthy habits and self-compassion, you can support lasting improvements in your overall wellbeing.

NIH: National Heart, Lung, and Blood Institute


[Learn More in MedlinePlus]

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
  • FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.