ICD-10-CM Code Z68

Body mass index [BMI]

Version 2020 Non-Billable Code

Not Valid for Submission

Z68 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of body mass index [bmi]. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:Z68
Short Description:Body mass index [BMI]
Long Description:Body mass index [BMI]

Consider the following ICD-10 codes with a higher level of specificity:

  • Z68.1 - Body mass index (BMI) 19.9 or less, adult
  • Z68.2 - Body mass index (BMI) 20-29, adult
  • Z68.20 - Body mass index (BMI) 20.0-20.9, adult
  • Z68.21 - Body mass index (BMI) 21.0-21.9, adult
  • Z68.22 - Body mass index (BMI) 22.0-22.9, adult
  • Z68.23 - Body mass index (BMI) 23.0-23.9, adult
  • Z68.24 - Body mass index (BMI) 24.0-24.9, adult
  • Z68.25 - Body mass index (BMI) 25.0-25.9, adult
  • Z68.26 - Body mass index (BMI) 26.0-26.9, adult
  • Z68.27 - Body mass index (BMI) 27.0-27.9, adult
  • Z68.28 - Body mass index (BMI) 28.0-28.9, adult
  • Z68.29 - Body mass index (BMI) 29.0-29.9, adult
  • Z68.3 - Body mass index (BMI) 30-39, adult
  • Z68.30 - Body mass index (BMI) 30.0-30.9, adult
  • Z68.31 - Body mass index (BMI) 31.0-31.9, adult
  • Z68.32 - Body mass index (BMI) 32.0-32.9, adult
  • Z68.33 - Body mass index (BMI) 33.0-33.9, adult
  • Z68.34 - Body mass index (BMI) 34.0-34.9, adult
  • Z68.35 - Body mass index (BMI) 35.0-35.9, adult
  • Z68.36 - Body mass index (BMI) 36.0-36.9, adult
  • Z68.37 - Body mass index (BMI) 37.0-37.9, adult
  • Z68.38 - Body mass index (BMI) 38.0-38.9, adult
  • Z68.39 - Body mass index (BMI) 39.0-39.9, adult
  • Z68.4 - Body mass index (BMI) 40 or greater, adult
  • Z68.41 - Body mass index (BMI) 40.0-44.9, adult
  • Z68.42 - Body mass index (BMI) 45.0-49.9, adult
  • Z68.43 - Body mass index (BMI) 50.0-59.9, adult
  • Z68.44 - Body mass index (BMI) 60.0-69.9, adult
  • Z68.45 - Body mass index (BMI) 70 or greater, adult
  • Z68.5 - Body mass index (BMI) pediatric
  • Z68.51 - Body mass index (BMI) pediatric, less than 5th percentile for age
  • Z68.52 - Body mass index (BMI) pediatric, 5th percentile to less than 85th percentile for age
  • Z68.53 - Body mass index (BMI) pediatric, 85th percentile to less than 95th percentile for age
  • Z68.54 - Body mass index (BMI) pediatric, greater than or equal to 95th percentile for age

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code Z68:

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)

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

Code Classification

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

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Body Weight

Do you know if your current weight is healthy? "Underweight", "normal", "overweight", and "obese" are all labels for ranges of weight. Obese and overweight mean that your weight is greater than it should be for your health. Underweight means that it is lower than it should be for your health. Your healthy body weight depends on your sex and height. For children, it also depends on your age.

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

Sudden weight gain can be due to medicines, thyroid problems, heart failure, and kidney disease.

Good nutrition and exercise can help in losing weight. Eating extra calories within a well-balanced diet and treating any underlying medical problems can help to add weight.


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